MAKERZ Launches 'Heat Core Band': An 11mm Thick, Battery-Free Heatstroke Prevention Wearable
MAKERZ Inc., a wholly-owned subsidiary of Keyence Corporation, has launched the 'Heat Core Band', a heatstroke prevention device. It is an ultra-thin 11mm wearable that requires no charging, operating for about 5 months. It uses two temperature sensors (body surface and environment) to assess heatstroke risks and provides two-stage alerts (LED, buzzer, vibration) to warn the wearer and surroundings. It responds to the mandatory requirements of the revised Industrial Safety and Health Regulations effective June 2025.
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- 📰 Published: May 19, 2026 at 19:00
- 🔍 Collected: May 19, 2026 at 10:31
- 🤖 AI Analyzed: May 20, 2026 at 01:28 (14h 56m after Collected)
MAKERZ Inc. (Headquarters: Kita-ku, Osaka; President: Yohei Hashimoto), a new business venture wholly owned by KEYENCE CORPORATION, has started selling the heatstroke prevention band 'Heat Core Band' on its official online store.
In June 2025, the revised Industrial Safety and Health Regulations will be enforced in Japan. Employers will be obligated to provide a 'mechanism to notice' abnormalities in workers when tasks are performed continuously for more than 1 hour or over 4 hours a day in environments with a Wet Bulb Globe Temperature (WBGT) of 28 degrees or higher, or a temperature of 31 degrees or higher. Violations may result in imprisonment for up to 6 months or a fine of up to 500,000 yen under the Industrial Safety and Health Act. In 2024, the number of occupational heatstroke casualties hit a record high of 1,257. Employers are strongly urged to achieve both legal compliance and workplace safety.
The Heat Core Band balances an ultra-thin 11mm design with a no-charge operation lasting approximately 5 months. Through a proprietary ultra-low power consumption circuit design, it achieves both thinness and power efficiency simultaneously. It will protect workers for an entire season while being so thin they forget they are wearing it.
The Heat Core Band is a heatstroke prevention device developed with three core principles: 'Usable immediately by anyone without hesitation', 'Does not interfere with work', and 'A design suitable for daily wear'.
■ Heat Core Band
Model: HC-BD-01
Price: 5,890 JPY (excluding tax) / Set of 10 for 55,900 JPY (excluding tax)
* Consultations for bulk purchases are also available.
Official Online Store
https://www.makerz.co.jp/electronic/product/heat_core_band/index.html
Features
Warnings from the wrist
It acquires data from two sensors—a body surface temperature sensor and an environmental temperature sensor—and uses a proprietary algorithm to determine heatstroke risk. It detects and warns of risks that cannot be captured by body surface temperature alone before the person collapses.
Two-stage alert for the wearer and surroundings
It issues warnings through three methods depending on the risk level: LED, buzzer (79dB), and vibration. At the 'Caution' stage, it vibrates; at the 'Warning' stage, the alarm sounds and vibrates, communicating danger not only to the wearer but also to people nearby.
11mm thickness. Thin enough not to hinder work
The main unit is only 11mm thick. It doesn't catch on cuffs and doesn't interfere with hands holding tools. The matte black finish blends into the worksite, minimizing its presence.
No operation required. No charging required. Operates for 5 months just by putting it on
Thanks to an ultra-low power consumption circuit design, it operates for about 5 months on a single CR1632 coin battery. No operation or charging is required; simply put it on every morning. That alone provides protection for an entire season.
IP67 compliant. Washable while worn
No need to remove it in environments where water splashes, such as during rain or hand washing.
Magnetic band, wearable over gloves
It uses a magnetic silicone band without buckle holes. It can be snapped into place at any position, fitting any wrist size from adults to children. It can be attached and detached with one hand while wearing work gloves, ensuring work is not interrupted.
Use Cases
Not just for manufacturing. For all worksites 'entrusted with people'.
Factories / Manufacturing sites: For safety management in high-temperature environments like assembly lines with poor air conditioning or furnace front work.
Construction / Building sites: For outdoor work under the blazing sun. As a heatstroke prevention measure fulfilling the duties of a health and safety manager.
Logistics / Warehouses: Ensuring safety during truck unloading operations or in large warehouses without air conditioning.
Sports instruction: For club activities and team instructors to objectively monitor athletes' physical conditions.
Event management: Safety management for staff at summer events and festivals, as a responsibility of the organizers.
*This product is not a medical device.
It is supplementary safety equipment designed to notify users of situations with a high risk of heatstroke and cannot be used for the diagnosis or treatment of heatstroke or other diseases. The alarm may not sound even if a doctor diagnoses heatstroke. It does not notify users of all physical ailments in hot environments. Regardless of whether the alarm sounds or not, please monitor physical conditions appropriately and seek proper medical attention if heatstroke or other diseases are suspected. *Specifications are subject to change without notice for product improvement.
Specifications
Model: HC-BD-01
Dimensions: Approx. 26 x 11 x 44 mm
Band: Magnetic silicone
Weight: 34g (Main unit 11g / Band 23g)
Alert: 2 stages (Caution / Warning)
Alert method: LED / Buzzer / Vibration
Protection rating: IP67
Heat resistance: 80°C
Vibration/Shock resistance: JIS B 7001 (drop shock, vibration test)
Buzzer volume: 79dB
Operating time: Approx. 5 months
Internal power: CR1632 (Lithium coin battery)
[Contact]
For details or questions regarding the product, please contact us via the following:
Inquiry Form | MAKERZ Online Store
■ About MAKERZ Inc.
We, MAKERZ, are a new business venture established with 100% investment from KEYENCE CORPORATION, which has been providing added value to global manufacturing sites for over 50 years. Backed by their technology and reliability, we translate quality refined in professional environments into designs easy to use in daily life, delivering them as products. Usability considered even for first-time users, and reliable performance that can be felt the longer it is used. We believe that the knowledge gained through manufacturing goes beyond mere product specs; it becomes a power that supports the user's creative drive and daily enjoyment. We hope to continue being a partner that supports daily life and work by balancing appealing design with true practicality.
In June 2025, the revised Industrial Safety and Health Regulations will be enforced in Japan. Employers will be obligated to provide a 'mechanism to notice' abnormalities in workers when tasks are performed continuously for more than 1 hour or over 4 hours a day in environments with a Wet Bulb Globe Temperature (WBGT) of 28 degrees or higher, or a temperature of 31 degrees or higher. Violations may result in imprisonment for up to 6 months or a fine of up to 500,000 yen under the Industrial Safety and Health Act. In 2024, the number of occupational heatstroke casualties hit a record high of 1,257. Employers are strongly urged to achieve both legal compliance and workplace safety.
The Heat Core Band balances an ultra-thin 11mm design with a no-charge operation lasting approximately 5 months. Through a proprietary ultra-low power consumption circuit design, it achieves both thinness and power efficiency simultaneously. It will protect workers for an entire season while being so thin they forget they are wearing it.
The Heat Core Band is a heatstroke prevention device developed with three core principles: 'Usable immediately by anyone without hesitation', 'Does not interfere with work', and 'A design suitable for daily wear'.
■ Heat Core Band
Model: HC-BD-01
Price: 5,890 JPY (excluding tax) / Set of 10 for 55,900 JPY (excluding tax)
* Consultations for bulk purchases are also available.
Official Online Store
https://www.makerz.co.jp/electronic/product/heat_core_band/index.html
Features
Warnings from the wrist
It acquires data from two sensors—a body surface temperature sensor and an environmental temperature sensor—and uses a proprietary algorithm to determine heatstroke risk. It detects and warns of risks that cannot be captured by body surface temperature alone before the person collapses.
Two-stage alert for the wearer and surroundings
It issues warnings through three methods depending on the risk level: LED, buzzer (79dB), and vibration. At the 'Caution' stage, it vibrates; at the 'Warning' stage, the alarm sounds and vibrates, communicating danger not only to the wearer but also to people nearby.
11mm thickness. Thin enough not to hinder work
The main unit is only 11mm thick. It doesn't catch on cuffs and doesn't interfere with hands holding tools. The matte black finish blends into the worksite, minimizing its presence.
No operation required. No charging required. Operates for 5 months just by putting it on
Thanks to an ultra-low power consumption circuit design, it operates for about 5 months on a single CR1632 coin battery. No operation or charging is required; simply put it on every morning. That alone provides protection for an entire season.
IP67 compliant. Washable while worn
No need to remove it in environments where water splashes, such as during rain or hand washing.
Magnetic band, wearable over gloves
It uses a magnetic silicone band without buckle holes. It can be snapped into place at any position, fitting any wrist size from adults to children. It can be attached and detached with one hand while wearing work gloves, ensuring work is not interrupted.
Use Cases
Not just for manufacturing. For all worksites 'entrusted with people'.
Factories / Manufacturing sites: For safety management in high-temperature environments like assembly lines with poor air conditioning or furnace front work.
Construction / Building sites: For outdoor work under the blazing sun. As a heatstroke prevention measure fulfilling the duties of a health and safety manager.
Logistics / Warehouses: Ensuring safety during truck unloading operations or in large warehouses without air conditioning.
Sports instruction: For club activities and team instructors to objectively monitor athletes' physical conditions.
Event management: Safety management for staff at summer events and festivals, as a responsibility of the organizers.
*This product is not a medical device.
It is supplementary safety equipment designed to notify users of situations with a high risk of heatstroke and cannot be used for the diagnosis or treatment of heatstroke or other diseases. The alarm may not sound even if a doctor diagnoses heatstroke. It does not notify users of all physical ailments in hot environments. Regardless of whether the alarm sounds or not, please monitor physical conditions appropriately and seek proper medical attention if heatstroke or other diseases are suspected. *Specifications are subject to change without notice for product improvement.
Specifications
Model: HC-BD-01
Dimensions: Approx. 26 x 11 x 44 mm
Band: Magnetic silicone
Weight: 34g (Main unit 11g / Band 23g)
Alert: 2 stages (Caution / Warning)
Alert method: LED / Buzzer / Vibration
Protection rating: IP67
Heat resistance: 80°C
Vibration/Shock resistance: JIS B 7001 (drop shock, vibration test)
Buzzer volume: 79dB
Operating time: Approx. 5 months
Internal power: CR1632 (Lithium coin battery)
[Contact]
For details or questions regarding the product, please contact us via the following:
Inquiry Form | MAKERZ Online Store
■ About MAKERZ Inc.
We, MAKERZ, are a new business venture established with 100% investment from KEYENCE CORPORATION, which has been providing added value to global manufacturing sites for over 50 years. Backed by their technology and reliability, we translate quality refined in professional environments into designs easy to use in daily life, delivering them as products. Usability considered even for first-time users, and reliable performance that can be felt the longer it is used. We believe that the knowledge gained through manufacturing goes beyond mere product specs; it becomes a power that supports the user's creative drive and daily enjoyment. We hope to continue being a partner that supports daily life and work by balancing appealing design with true practicality.
FAQ
Does the Heat Core Band need to be charged?
No, charging is not required. Thanks to its ultra-low power consumption circuit design, it operates for about 5 months on a single coin battery (CR1632).
Can people nearby notice the Heat Core Band's alerts?
Yes. Depending on the risk level, it uses LED lights and a buzzer (79dB) to alert people nearby, in addition to vibration for the wearer.
Is the Heat Core Band water-resistant?
Yes, it has an IP67 protection rating, meaning you don't need to remove it during work in the rain or when washing your hands.