2X Chest Strap Belt for Polar H7 H10 HR HRM Heart Rate Monitor Sensor Replacement Black Comfortable chest strap for heart rate measurement compatible with Polar products. The combination of soft fabrics and adaptive electrodes ensures high sensitivity. As an essential component of a heart rate monitor, it accurately detects and transmits real-time heart rate data to smartphones. This popular heart rate belt is easy to use and highly durable. Features snap attachment method. Color: Black This lightweight garment is compatible with all heart rate sensors supporting ANT+ and Bluetooth 4.0. Made from high-quality materials, the strap fits closely to the skin, effectively capturing heart electrical signals for faster and more accurate heart rate readings. Material: Silicone gel + fiber Belt length: 90130 cm / 35.451.2 in Package Included: 2 x Adjustable Elastic Strap Note: Other products are not included. Lighting and display differences may cause slight color variations between the image and the actual item. Measurement error allowance: +/- 13 cm.