CHILEAF CL800 Heart Rate Monitor Chest Strap Fitness Tracker IP67 Waterproof for Wahoo, Polar Beat, Strava, Zwift, Nike+ Run Club,Support Bluetooth 4.0 and ANT+, iPhone & Android Compatible

*✔️ATHLETE TESTED RELIABILITY: Refined & tested by endurance athletes for class leading Heart Rate Monitor Chest Strap connectivity with dual-band Bluetooth 4.0/ 5.0 & ANT+ protocol. CL800 Accuracy ±1bpm. CL800 Chest Heart Rate Monitors are absurdly reliable.

*✔️ BROAD COMPATIBILITY:You can download and use our APP: X-Fitness to connect CL800,also download your favorite APP to use (such as Wahoo Fitness, Polar Beat, Strava, Zwift, Runtastic Pro, Nike Run Club, etc.).Compatibility-iOS mobile devices: iPhone 5 and later, with iOS 11 or later; Android mobile devices with Bluetooth 4.0 capability and Android 5.0 or later.

*✔️VERSATILITY: CL800 has been tested by professional marathon runners, mountain enthusiasts and mountain cyclists. It shows that CL800 helps them to obtain accurate heart rate, thereby helping them to achieve the best exercise state.. Wear monitor when rowing, cycling, climbing,Yoga,running, training indoors Or outdoors.

*✔️CL800 BUILD QUALITY:Adjustable Chest Strap - Fabric material, comfortable to wear, adjustable length from 65" to 95". Simply remove the heart rate connector, and it’s washable, too.Built-in replaceable CR2032 button battery, with a 12 months working time, Easy to replace, use the coin to unscrew and replace the battery.

*✔️100% RISK FRE and MONEY BACEK Guarantee: Unlimited heart rate monitor battery replacements and Adjustable replacement strap & no questions asked warranty for 12 months. any issues with the CL800 please feel free to conatct us or just simply return it and get your money back.