Features 1、1. [Bluetooth Support]: Supports Bluetooth 4.2, compatible with hundreds of third-party fitness apps, including compatible for beat/for Zwift/for Elite HRV/for Heart Graph/for Wahoo Fitness/for Endomondo/for Peloton, etc. 2、2. [ANT+ Support]: ANT+ support allows you to connect to the widest range of fitness equipment, such as compatible for Garmin sports watches, cycling computers, treadmills with ANT+, and more. 3、3. [Soft and Adjustable Chest Strap]: Made of comfortable, soft stretch material, the chest strap is designed to be worn all day during workouts with no friction and comfort. Fully adjustable chest strap supports bust 25" - 27". It comes with a CR2032 battery with a battery life of up to 12 months and is replaceable. 4、4. [Accurate and Professional]: Provide high-quality measurement for many well-trained professional athletes, the main item must be accurate is heart rate, our heart rate detector helps them get accurate heart rate. 5、5. [Sports Essentials]: Suitable for cycling, cycling, running, training, mountaineering, fitness, and other sports occasions. Material: ABS, stretch material Product Type: Heart Rate Monitor Chest Strap Weight: 13g (Monitor only) Unit Size: 57.6*33*11mm (Monitor only) Supported Chest Size: 64-86cm (±2cm) Heart Rate Unit: bpm Wireless Interface: Bluetooth 4.2, ANT+ Battery Model: CR2032 x1 Heart Rate Range: 30-240bpm Waterproof Level: IP67 Package List 1* Heart Rate Sensor 1* CR2032 Battery (pre-installed in sensor) 1* Adjustable Elastic Strap