ROCKBROS HRM812 Heart Rate Monitor Chest Strap – ANT + Bluetooth IP67 Waterproof, 800H Battery Life, Wide Compatibility

Price: $39.99
(as of Feb 14, 2026 12:19:01 UTC – Details)

Product description

Long Battery Life

Easy battery replacement – use a coin – like tool to open the battery door and replace.

Device Compatibility

Supports Bluetooth 4.0/5.0 (10 – meter range) & ANT+ (6 – meter range) dual protocols.

For Bluetooth Protocol

For Bluetooth Protocol

It pairs with apps such as Sports Tracker, Strava, Wahoo Fitness, Polar Beat, Zwift, KEEP, etc.

1 Long Battery Life

2 Device Compatibility

3 For Bluetooth Protocol

Installation Steps

EASY CONNECTION & AUTO WAKE – SLEEP:Connect to mobile phones via Bluetooth for instant use. Features auto – wake when correctly worn (starts working as heart rate belt is properly on) and auto – sleep when detached, no need to manually switch on/off.
LONG BATTERY LIFE:Powered by a CR2032 button battery, it offers an 800 – hour long battery life. No frequent charging needed, convenient for daily fitness and outdoor sports. Heart rate range covers 30 – 240 BPM. Easy battery replacement – use a coin – like tool to open the battery door and replace following instructions.
LIGHTWEIGHT & ERGONOMIC DESIGN:The heart rate sensor is lightweight (main unit 59.5×33.5×10.5mm, ~13g; chest strap 3cm×65 – 95cm, ~32g) and ergonomically designed. The detachable main unit fits skin well, avoiding slipping during exercise. Easy to clean the chest strap and replace the battery.
WATERPROOF & SWEAT – RESISTANT:With IP67 water and sweat resistance. The ABS shell of the sensor prevents water and sweat from seeping into the main unit, suitable for activities like triathlons, trail running, and even swimming.
BROAD DEVICE COMPATIBILITY:Supports Bluetooth 4.0/5.0 (10 – meter range) & ANT+ (6 – meter range) dual protocols. Works with a wide range of devices. For ANT+ protocol, it’s compatible with brands like ROCKBROS, Magene, Bryton, Wahoo, etc. For Bluetooth protocol, it pairs with popular sports apps such as Sports Tracker, Strava, Wahoo Fitness, Polar Beat, Zwift, KEEP, etc. Enables seamless heart – rate data sharing across your favorite fitness ecosystems.