1 [Bluetooth Support]: Supports Bluetooth 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 [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 [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 [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 [Sports Essentials]: Suitable for cycling, cycling, running, training, mountaineering, fitness, and other sports occasions.1* Heart Rate Sensor1* CR2032 Battery (pre-installed in sensor)1* Adjustable Elastic Strap