No Charging, No Operation Required: 'Heat Core Band' – A 11mm Ultra-Thin Heatstroke Prevention Wristband That Alerts in Two Stages – Now Available on Amazon | MAKERZ Inc.

MAKERZ Inc. (Headquarters: Kita-ku, Osaka; President & CEO: Yohei Hashimoto), a new venture 100% funded by KEYENCE Corporation, has launched general sales of the 'Heat Core Band,' a heatstroke prevention wristband, on Amazon.

Heatstroke is a serious annual issue causing loss of life and health. Risks are rising not only in outdoor work but also in commuting, sports, and everyday situations. The danger of heatstroke lies in how difficult it is to notice—by the time someone collapses, it’s already too late.

The Heat Core Band combines an ultra-thin 11mm design with no charging required and approximately 5 months of operation. Thanks to its proprietary low-power design, it achieves both slimness and long battery life. So thin you’ll forget you’re wearing it, it protects you throughout an entire season. The Heat Core Band was developed with a focus on being something 'anyone can use immediately and without hesitation,' 'something that doesn’t interfere with daily life,' and 'something easy to wear every day.'

Heat Core Band (Heatstroke Prevention Band)

Price: ¥7,260 (tax included)

Sales Page (Amazon)

[Product Details] https://www.makerz.co.jp/electronic/product/heat_core_band/

Features

Warning Heatstroke Risk from the Wrist

Data is collected from two sensors—body surface temperature and ambient temperature—and analyzed using a proprietary algorithm to assess heatstroke risk. It detects risks that body temperature alone cannot capture, issuing warnings before collapse occurs.

Two-Stage Alert: For the Wearer and Those Nearby

Warnings are issued via LED, buzzer (79dB), and vibration, depending on the risk level. In the 'Caution' stage, vibration alerts the wearer. In the 'Alert' stage, both sound and vibration activate, notifying not only the wearer but also people nearby.

11mm Thin: So Slim You’ll Forget You’re Wearing It

The main unit is only 11mm thick. It won’t catch on sleeves and won’t hinder movement in any situation. Its matte black finish blends naturally into everyday outfits.

No Operation, No Charging: Wear It and It Works for 5 Months

Thanks to an ultra-low power circuit design, it operates for about 5 months on a single CR1632 coin battery. No operation or charging is required—just put it on each morning. That’s all it takes to stay protected all season.

IP67 Rated: Washable While Worn

No need to remove it in rainy conditions or when washing hands.

Magnetic Band for One-Touch Attachment

Features a buckle-free magnetic silicone band. It snaps securely at any position, fitting wrists of all sizes—from adults to children. Can be attached and removed one-handed, even while wearing gloves.

Target Use Cases

Construction and worksites

Logistics and warehouses

Sports events

This Product Is Not a Medical Device

This is a supplementary safety device designed to alert users to high-risk heatstroke conditions. It cannot be used for the diagnosis or treatment of heatstroke or other diseases. It may not trigger an alert even if a doctor diagnoses heatstroke. It does not notify all physical discomforts in hot environments. Regardless of whether an alert is issued, users should regularly check their condition and seek appropriate medical care if heatstroke or other illness is suspected. *Specifications are subject to change without notice for product improvement.

Specifications

Model

HC-BD-01

Main Unit Dimensions

Approx. 26 × 11 × 44 mm

Band

Magnetic Silicone

Weight

34g (Main unit: 11g / Band: 23g)

Alert Levels

Two stages (Caution / Alert)

Alert Methods

LED / Buzzer / Vibration

Protection Rating

IP67

Heat Resistance

80°C

Vibration and Shock Resistance

JIS B 7001 (Drop impact, vibration test)

Buzzer Volume

79dB

Operating Time

Approx. 5 months

Built-in Power Source

CR1632 (Lithium coin battery)

[Inquiries]

For product details or questions, please contact us via the following:

Inquiry Form | MAKERZ (MAKERZ) Online Store

About MAKERZ Inc.

We, MAKERZ, are a new venture established with 100% investment from KEYENCE Corporation, which has been delivering value to global manufacturing sites for over 50 years. Leveraging that technology and trust, we deliver products that incorporate the quality honed in professional environments into user-friendly designs for everyday life. We focus on ease of use for first-time users and reliable performance that becomes more apparent with continued use. We believe the knowledge cultivated through manufacturing goes beyond mere product specifications—it empowers creativity and enhances daily life. We aim to remain a trusted partner in people’s lives and work, combining captivating design with truly useful practicality.