Welcome to our store！</br> 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 1* Heart Rate Sensor 1* CR2032 Battery (pre-installed in sensor) 1* Adjustable Elastic Strap Satisfaction - Our customers are our top priority. If you find any product problems after receiving the goods, such as damage and incorrect quantity of goods, please contact the seller immediately. We try our best to provide you with satisfactoryaftersalesservice</br>