Industry-leading Wrist-Type Diving Computer 'Descent Mk3i' Gets New Color: 'Descent Mk3i 51mm Black & Bare Titanium' to be Released on April 28 (Tuesday)
Garmin Japan Co., Ltd. is releasing the new 'Descent Mk3i 51mm Black & Bare Titanium' on April 28, 2026. This top-tier GPS diving watch features a vivid AMOLED display, advanced health and diving functions like 'Dive Readiness', and precise positioning with GNSS multiband. It offers enhanced safety through pairing with the 'Descent T2' transmitter, supporting Subwave (2.0) for integrated tank monitoring and underwater messaging.
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- 📰 Published: April 15, 2026 at 22:00
- 🔍 Collected: April 15, 2026 at 13:31
- 🤖 AI Analyzed: April 15, 2026 at 19:45 (6h 13m after Collected)
Garmin Japan Co., Ltd. (hereinafter referred to as Garmin), a professional in data utilization originating from the US, will release the new color 'Descent Mk3i 51mm Black & Bare Titanium' on April 28, 2026 (Tuesday), from its top-of-the-line GPS diving watch series, the 'Descent Mk3', which provides real-time data necessary for diving and supports safe and enjoyable dives.
Features of 'Descent Mk3i 50mm Black & Bare Titanium'
■ Adopts an AMOLED display that achieves vivid and high-definition visuals. Equipped with features like 'Large Font Mode' and inductive buttons, it ensures high visibility and operability regardless of depth.
■ Equipped with functions useful for health management, not just diving, such as 'Dive Readiness,' which checks how prepared the body is for diving.
■ Supports diving with a variety of features, including precise positioning accuracy with Garmin's unique GNSS multiband, long battery life, and an LED flashlight useful underwater.
■ Provides strong support for diver safety through pairing with the transmitter 'Descent T2'. It supports Subwave (2.0), which applies Garmin sonar technology to enable integrated monitoring of tank pressure, air volume, and air consumption rate. It allows checking tank pressure, propulsion, and distance for up to 8 units, and sending/receiving messages underwater. Furthermore, when used in conjunction with the safety management device 'Descent S1 Buoy', data tracking from the boat or land is also possible.
【NEW】
■ The new color adds a silver model. It features a stylish design combining silver and black titanium.
■ Diving functions have been updated. Newly added are 'Backup Dive Computer' and 'Side Mount Tank Switching Guidance' functions.
【Product Overview】
● Descent Mk3i 50mm, Bare Ti/Black
Release Date: April 28, 2026 (Tuesday)
Price: 248,000 yen (tax included)
Size (W×H×D): 51×51×16.4mm
Weight: 105.6g (including silicone band)
Display: 1.4 inches (diameter 35.56mm), 454×454 pixels / AMOLED
Lens Material: Sapphire crystal lens
Bezel Material: DLC Titanium, PVD coated titanium
Descent Mk3i 50mm, Bare Ti/Black
【Features】
＜New Functions＞
Diving functions have been updated with two new features:
* "Backup Dive Computer"
This function allows automatic synchronization of settings between two compatible dive computers before a dive. This includes dive profiles, gas types, and pairing with the Descent T2 transceiver (for select models only). If the main computer malfunctions, you can continue diving with peace of mind by utilizing the backup unit with identical settings.
* "Side Mount Tank Switching Guidance"
When diving with side mount tanks, this function displays guidance on gas switching on compatible Descent dive computers paired with the 'Descent T2'. By breathing equally from both tanks, neutral buoyancy is maintained, ensuring reliable gas supply backup.
＜Materials, Design, and Interface＞
AMOLED Display with High Underwater Visibility
The display uses AMOLED for vivid and high-definition visuals, appealing for visibility in deep water and dark spots. The display is equipped with features like "Large Font Mode," allowing important diving data numbers to be viewed in large characters.
Combines Robustness and Underwater Operability. Waterproof Rating: 20ATM
The main unit features a scratch-resistant sapphire lens and a rugged design compliant with MIL-STD-810 US military standards. With a 20ATM (200m) water resistance rating (refer to https://www.garmin.com/ja-JP/legal/waterrating-definitions/), it supports all types of diving, including freediving beyond 100m. The right side of the watch is equipped with a button guard to protect the depth sensor.
The interface uses inductive buttons that can be operated firmly even with gloves on underwater. If you cannot press the buttons due to thick gloves during a dive, you can switch pages by double-tapping the display. For land operation, it also supports a touch panel (off during diving).
＜Diverse and Professional Diving Support Functions＞
"Dive Readiness" to Check Condition Before Diving
Analyzes and displays how prepared your body is for diving based on factors like sleep, exercise, stress, and jet lag. By recognizing their health status before a dive, divers can make decisions such as adjusting plans for depth, time, or location, supporting safe and unhurried diving.
Pairing with Accessory Product 'Descent T2' for Strong Diving Safety Support
Supports Subwave (2.0), which applies Garmin sonar technology to enable integrated monitoring of tank pressure, air volume, and air consumption rate. In addition to checking tank pressure, divers with Mk3 series and T2 can send and receive simple text messages underwater. When used with the safety management device 'Descent S1 Buoy', data tracking of divers underwater is possible from the boat or land.
＜Display and Monitoring Functions＞
- Check tank pressure, air volume, and air consumption rate at hand.
- Check buddy's tank pressure, buddy's depth, and distance to buddy at hand (distance will be available via future software update).
- Up to 8 units, within a 10m range.
＜Underwater Communication Function＞
- Divers with Mk3 series and T2 can send and receive simple text messages underwater.
- Messages utilize pre-set phrases.
- Communication range up to 30m. *Transmission/reception distance may vary depending on conditions such as currents.
GNSS Multiband Compatible GPS Navigation
Garmin's unique GPS navigation, utilizing GPS, GLONASS, and GALILEO for precise GPS location information, supports GNSS multiband. By accessing multiple frequencies transmitted by satellites, it improves positioning accuracy in areas where GNSS signals are reflected, weak, or difficult to acquire.
For diving, it allows marking entry and exit points. It also features ABC sensors with an underwater 3-axis compass.
LED Flashlight Included
An LED flashlight, switchable between red and white, is located at the 12 o'clock position. It can also serve as a backup light for diving.
Automatic Dive Data Recording
Diving mode automatically starts when a depth of 1.2m is reached. The device can store and review up to 200 dive logs. Dive logs can also be shared and reviewed using the Garmin Dive app, which offers unlimited dive data storage.
6 Dive Modes
Choose from single-gas and multi-gas diving (including nitrox and trimix), gauge, apnea, spearfishing, and CCR modes. Dives can be planned on the device.
Audible and Vibration Alerts
New information is communicated to the user via audio and vibration (selectable), ensuring safety.
Diving Functions
Displays depth, dive time, water temperature, NDL/TTS, ascent/descent speed, gas mix, PO2, N2 load, decompression stop information, etc.
Battery Performance
Garmin's renowned battery performance offers approximately 66 hours in dive mode, about 40 hours with Subwave usage, and an astonishing 25 days in smartwatch mode.
(From left: Large Font Mode, Dive Readiness, Dive View Map, Diver Position, Dive Activity)
＜Mapping & Smart Features Useful for Daily Life＞
Advanced Mapping
Includes navigation to dive sites (POI) such as coral reefs, as well as pre-loaded maps for 43,000 golf courses worldwide and over 2,000 ski maps.
Optical Heart Rate Monitor
Measures activity intensity and heart rate variability to track stress levels, sleep, and other life logs. Stress levels can also be measured underwater.
Multi-Sport Activity Modes
Built-in activity profiles for sports, adventures, and training, including swimming, running, cycling, skiing, rowing, and boating.
Performance Condition
Displays advanced training metrics including running dynamics, VO2 Max adapted for altitude and heat, and recovery advisor. It also features the PacePro function to support pace adjustment and ClimbPro to display climbing information in real-time.
Cashless Payment Function for Daily Convenience
Convenient daily travel and shopping with cashless payments supporting Suica*. Compatible with both iOS and Android. *Suica is a registered trademark of East Japan Railway Company.
Music Playback
Synchronize and play music offline from selected streaming services (AWA, LINE MUSIC, Amazon Music, Spotify, etc.).
(From left: Map, Stress Level, Sports Activity, VO2 Max, Suica)
【Descent Mk3 Series Existing Lineup】 (From left in image)
Descent Mk3i 51mm Titanium Band Set Black
278,000 yen
Descent Mk3i 51mm Silicone Band Black
248,000 yen
Descent Mk3Si 43mm Black, French Gray
218,000 yen
Descent Mk3S 43mm Fog Gray *Subwave not supported
187,000 yen
＜Product Specifications＞
Internal Memory: 32GB
Satellite Positioning: GNSS multiband (GPS/GLONASS/GALILEO/QZSS (complementary signal))
Sensors: Underwater optical heart rate monitor (4th gen), underwater 3-axis electronic compass, barometric altimeter, accelerometer, thermometer, depth sensor, etc.
Water Resistance: 20ATM diving (200m waterproof)
Battery Life: Dive mode: approx. 66 hours / same (with Descent T2): approx. 40 hours. Smartwatch mode: approx. 25 days.
Interface: Buttons / Touchscreen (off during diving)
Diving Functions: Supports 6 dive modes (single gas, multi-gas, gauge, CCR, apnea, spearfishing), dive log recording (up to 200), GPS support on surface, automatic recording of entry/exit points, underwater 3-axis electronic compass, dive planner, decompression theory (Bühlmann ZHL-16c), freshwater/saltwater/custom, safety stop, deep stop, PO2 (max 1.6), conservativeness, gas settings (air, nitrox, trimix, oxygen, backup gas), navigation to dive sites (shipwrecks, coral reefs, etc.), Dive Readiness, Dive View Map, Large Font Mode.
Subwave Air Integration Function: Compatible with Descent T2 (sold separately) for tank pressure monitoring. Max 8 units connected / Underwater max range (10m). *Connectivity and transmission range are affected by conditions such as currents and seabed topography.
Connectivity: Bluetooth, ANT+, Wi-Fi, USB
Sports Functions: Over 100 profiles including running, golf, skiing, hiking, cycling, swimming, SUP, etc.
Map Services: Built-in detailed topographic maps of Japan, ski maps worldwide (over 2,000), golf course maps (over 43,000). Downloadable overseas continental maps (TopoActive) (free). Detailed road maps of Japan and Japan mountain topographic maps available for separate purchase.
Smart Functions: Notification function*1, Life log (steps, sleep management*2, stress measurement, Body Battery, calories burned), jet lag advisor, etc. *1 Requires smartphone pairing. *2 Displayed only in Garmin Connect app.
Watch Functions: GPS time sync, alarm, timer, stopwatch, tide graph*, sunrise/sunset times*, automatic backlight, watch face change. *Requires smartphone pairing.
Other Functions: Payment function (Garmin Pay, Suica), music function, LED flashlight, etc.
Standard Accessories: Main unit, long band for wetsuits, charging cable for Descent (USB-C), product warranty.
Product details can be viewed at the following URL:
View Details
【GARMIN DIVE APP】 Record and Share Dive Data
A downloadable app for compatible smartphones or tablets to record and share dive data and find new dive locations.
Record Dive Data: Manually record detailed information and statistics for each dive. You can share recorded dive data or explore new dive locations.
Exploration Tools: Use exploration tools to find new dive locations, view popular spots among other users, weather conditions, and public dive logs. You can also rate and review dive locations.
Automatic Synchronization: Pair the app with the "Descent" series to automatically synchronize and upload dive logs.
【About Garmin】
Garmin (Garmin) is a GPS device manufacturer founded in the United States. It was established in 1989 by Gary Burrell and Min H. Kao. The company name Garmin is derived from parts of the founders' names, Gary and Min. Since its founding, Garmin has aimed to create navigation and communication devices that enrich lifestyles. It has developed innovative products in a wide range of fields, including automotive, aviation, marine, fitness, and outdoor activities, leveraging its expertise in wireless technology. To date, it has manufactured and sold hundreds of millions of GPS receivers. The company has maintained profitability since its inception and is included in the S&P 500 index of US stock markets.
https://www.garmin.co.jp/
* Proper nouns such as brand names and company names mentioned in this release are the trademarks or registered trademarks of their respective companies.
* Prices, release dates, and specifications published in this release are subject to change without notice.
＜Inquiries regarding this product from readers＞
Garmin Japan Co., Ltd.
https://www.garmin.co.jp/
1-7-6 Fujimino Higashi, Fujimi City, Saitama 354-0036
TEL: 049-267-9114 FAX: 049-267-9124 E-mail: jp_Info@garmin.com
Features of 'Descent Mk3i 50mm Black & Bare Titanium'
■ Adopts an AMOLED display that achieves vivid and high-definition visuals. Equipped with features like 'Large Font Mode' and inductive buttons, it ensures high visibility and operability regardless of depth.
■ Equipped with functions useful for health management, not just diving, such as 'Dive Readiness,' which checks how prepared the body is for diving.
■ Supports diving with a variety of features, including precise positioning accuracy with Garmin's unique GNSS multiband, long battery life, and an LED flashlight useful underwater.
■ Provides strong support for diver safety through pairing with the transmitter 'Descent T2'. It supports Subwave (2.0), which applies Garmin sonar technology to enable integrated monitoring of tank pressure, air volume, and air consumption rate. It allows checking tank pressure, propulsion, and distance for up to 8 units, and sending/receiving messages underwater. Furthermore, when used in conjunction with the safety management device 'Descent S1 Buoy', data tracking from the boat or land is also possible.
【NEW】
■ The new color adds a silver model. It features a stylish design combining silver and black titanium.
■ Diving functions have been updated. Newly added are 'Backup Dive Computer' and 'Side Mount Tank Switching Guidance' functions.
【Product Overview】
● Descent Mk3i 50mm, Bare Ti/Black
Release Date: April 28, 2026 (Tuesday)
Price: 248,000 yen (tax included)
Size (W×H×D): 51×51×16.4mm
Weight: 105.6g (including silicone band)
Display: 1.4 inches (diameter 35.56mm), 454×454 pixels / AMOLED
Lens Material: Sapphire crystal lens
Bezel Material: DLC Titanium, PVD coated titanium
Descent Mk3i 50mm, Bare Ti/Black
【Features】
＜New Functions＞
Diving functions have been updated with two new features:
* "Backup Dive Computer"
This function allows automatic synchronization of settings between two compatible dive computers before a dive. This includes dive profiles, gas types, and pairing with the Descent T2 transceiver (for select models only). If the main computer malfunctions, you can continue diving with peace of mind by utilizing the backup unit with identical settings.
* "Side Mount Tank Switching Guidance"
When diving with side mount tanks, this function displays guidance on gas switching on compatible Descent dive computers paired with the 'Descent T2'. By breathing equally from both tanks, neutral buoyancy is maintained, ensuring reliable gas supply backup.
＜Materials, Design, and Interface＞
AMOLED Display with High Underwater Visibility
The display uses AMOLED for vivid and high-definition visuals, appealing for visibility in deep water and dark spots. The display is equipped with features like "Large Font Mode," allowing important diving data numbers to be viewed in large characters.
Combines Robustness and Underwater Operability. Waterproof Rating: 20ATM
The main unit features a scratch-resistant sapphire lens and a rugged design compliant with MIL-STD-810 US military standards. With a 20ATM (200m) water resistance rating (refer to https://www.garmin.com/ja-JP/legal/waterrating-definitions/), it supports all types of diving, including freediving beyond 100m. The right side of the watch is equipped with a button guard to protect the depth sensor.
The interface uses inductive buttons that can be operated firmly even with gloves on underwater. If you cannot press the buttons due to thick gloves during a dive, you can switch pages by double-tapping the display. For land operation, it also supports a touch panel (off during diving).
＜Diverse and Professional Diving Support Functions＞
"Dive Readiness" to Check Condition Before Diving
Analyzes and displays how prepared your body is for diving based on factors like sleep, exercise, stress, and jet lag. By recognizing their health status before a dive, divers can make decisions such as adjusting plans for depth, time, or location, supporting safe and unhurried diving.
Pairing with Accessory Product 'Descent T2' for Strong Diving Safety Support
Supports Subwave (2.0), which applies Garmin sonar technology to enable integrated monitoring of tank pressure, air volume, and air consumption rate. In addition to checking tank pressure, divers with Mk3 series and T2 can send and receive simple text messages underwater. When used with the safety management device 'Descent S1 Buoy', data tracking of divers underwater is possible from the boat or land.
＜Display and Monitoring Functions＞
- Check tank pressure, air volume, and air consumption rate at hand.
- Check buddy's tank pressure, buddy's depth, and distance to buddy at hand (distance will be available via future software update).
- Up to 8 units, within a 10m range.
＜Underwater Communication Function＞
- Divers with Mk3 series and T2 can send and receive simple text messages underwater.
- Messages utilize pre-set phrases.
- Communication range up to 30m. *Transmission/reception distance may vary depending on conditions such as currents.
GNSS Multiband Compatible GPS Navigation
Garmin's unique GPS navigation, utilizing GPS, GLONASS, and GALILEO for precise GPS location information, supports GNSS multiband. By accessing multiple frequencies transmitted by satellites, it improves positioning accuracy in areas where GNSS signals are reflected, weak, or difficult to acquire.
For diving, it allows marking entry and exit points. It also features ABC sensors with an underwater 3-axis compass.
LED Flashlight Included
An LED flashlight, switchable between red and white, is located at the 12 o'clock position. It can also serve as a backup light for diving.
Automatic Dive Data Recording
Diving mode automatically starts when a depth of 1.2m is reached. The device can store and review up to 200 dive logs. Dive logs can also be shared and reviewed using the Garmin Dive app, which offers unlimited dive data storage.
6 Dive Modes
Choose from single-gas and multi-gas diving (including nitrox and trimix), gauge, apnea, spearfishing, and CCR modes. Dives can be planned on the device.
Audible and Vibration Alerts
New information is communicated to the user via audio and vibration (selectable), ensuring safety.
Diving Functions
Displays depth, dive time, water temperature, NDL/TTS, ascent/descent speed, gas mix, PO2, N2 load, decompression stop information, etc.
Battery Performance
Garmin's renowned battery performance offers approximately 66 hours in dive mode, about 40 hours with Subwave usage, and an astonishing 25 days in smartwatch mode.
(From left: Large Font Mode, Dive Readiness, Dive View Map, Diver Position, Dive Activity)
＜Mapping & Smart Features Useful for Daily Life＞
Advanced Mapping
Includes navigation to dive sites (POI) such as coral reefs, as well as pre-loaded maps for 43,000 golf courses worldwide and over 2,000 ski maps.
Optical Heart Rate Monitor
Measures activity intensity and heart rate variability to track stress levels, sleep, and other life logs. Stress levels can also be measured underwater.
Multi-Sport Activity Modes
Built-in activity profiles for sports, adventures, and training, including swimming, running, cycling, skiing, rowing, and boating.
Performance Condition
Displays advanced training metrics including running dynamics, VO2 Max adapted for altitude and heat, and recovery advisor. It also features the PacePro function to support pace adjustment and ClimbPro to display climbing information in real-time.
Cashless Payment Function for Daily Convenience
Convenient daily travel and shopping with cashless payments supporting Suica*. Compatible with both iOS and Android. *Suica is a registered trademark of East Japan Railway Company.
Music Playback
Synchronize and play music offline from selected streaming services (AWA, LINE MUSIC, Amazon Music, Spotify, etc.).
(From left: Map, Stress Level, Sports Activity, VO2 Max, Suica)
【Descent Mk3 Series Existing Lineup】 (From left in image)
Descent Mk3i 51mm Titanium Band Set Black
278,000 yen
Descent Mk3i 51mm Silicone Band Black
248,000 yen
Descent Mk3Si 43mm Black, French Gray
218,000 yen
Descent Mk3S 43mm Fog Gray *Subwave not supported
187,000 yen
＜Product Specifications＞
Internal Memory: 32GB
Satellite Positioning: GNSS multiband (GPS/GLONASS/GALILEO/QZSS (complementary signal))
Sensors: Underwater optical heart rate monitor (4th gen), underwater 3-axis electronic compass, barometric altimeter, accelerometer, thermometer, depth sensor, etc.
Water Resistance: 20ATM diving (200m waterproof)
Battery Life: Dive mode: approx. 66 hours / same (with Descent T2): approx. 40 hours. Smartwatch mode: approx. 25 days.
Interface: Buttons / Touchscreen (off during diving)
Diving Functions: Supports 6 dive modes (single gas, multi-gas, gauge, CCR, apnea, spearfishing), dive log recording (up to 200), GPS support on surface, automatic recording of entry/exit points, underwater 3-axis electronic compass, dive planner, decompression theory (Bühlmann ZHL-16c), freshwater/saltwater/custom, safety stop, deep stop, PO2 (max 1.6), conservativeness, gas settings (air, nitrox, trimix, oxygen, backup gas), navigation to dive sites (shipwrecks, coral reefs, etc.), Dive Readiness, Dive View Map, Large Font Mode.
Subwave Air Integration Function: Compatible with Descent T2 (sold separately) for tank pressure monitoring. Max 8 units connected / Underwater max range (10m). *Connectivity and transmission range are affected by conditions such as currents and seabed topography.
Connectivity: Bluetooth, ANT+, Wi-Fi, USB
Sports Functions: Over 100 profiles including running, golf, skiing, hiking, cycling, swimming, SUP, etc.
Map Services: Built-in detailed topographic maps of Japan, ski maps worldwide (over 2,000), golf course maps (over 43,000). Downloadable overseas continental maps (TopoActive) (free). Detailed road maps of Japan and Japan mountain topographic maps available for separate purchase.
Smart Functions: Notification function*1, Life log (steps, sleep management*2, stress measurement, Body Battery, calories burned), jet lag advisor, etc. *1 Requires smartphone pairing. *2 Displayed only in Garmin Connect app.
Watch Functions: GPS time sync, alarm, timer, stopwatch, tide graph*, sunrise/sunset times*, automatic backlight, watch face change. *Requires smartphone pairing.
Other Functions: Payment function (Garmin Pay, Suica), music function, LED flashlight, etc.
Standard Accessories: Main unit, long band for wetsuits, charging cable for Descent (USB-C), product warranty.
Product details can be viewed at the following URL:
View Details
【GARMIN DIVE APP】 Record and Share Dive Data
A downloadable app for compatible smartphones or tablets to record and share dive data and find new dive locations.
Record Dive Data: Manually record detailed information and statistics for each dive. You can share recorded dive data or explore new dive locations.
Exploration Tools: Use exploration tools to find new dive locations, view popular spots among other users, weather conditions, and public dive logs. You can also rate and review dive locations.
Automatic Synchronization: Pair the app with the "Descent" series to automatically synchronize and upload dive logs.
【About Garmin】
Garmin (Garmin) is a GPS device manufacturer founded in the United States. It was established in 1989 by Gary Burrell and Min H. Kao. The company name Garmin is derived from parts of the founders' names, Gary and Min. Since its founding, Garmin has aimed to create navigation and communication devices that enrich lifestyles. It has developed innovative products in a wide range of fields, including automotive, aviation, marine, fitness, and outdoor activities, leveraging its expertise in wireless technology. To date, it has manufactured and sold hundreds of millions of GPS receivers. The company has maintained profitability since its inception and is included in the S&P 500 index of US stock markets.
https://www.garmin.co.jp/
* Proper nouns such as brand names and company names mentioned in this release are the trademarks or registered trademarks of their respective companies.
* Prices, release dates, and specifications published in this release are subject to change without notice.
＜Inquiries regarding this product from readers＞
Garmin Japan Co., Ltd.
https://www.garmin.co.jp/
1-7-6 Fujimino Higashi, Fujimi City, Saitama 354-0036
TEL: 049-267-9114 FAX: 049-267-9124 E-mail: jp_Info@garmin.com