Garmin HRM Dual heart rate monitor Breast Bluetooth/ANT+ Black

Depth: 34 mm | Heart rate data transfer: Bluetooth/ANT+ | Bluetooth version: 5.0 | Waterproof: Yes | Bluetooth range: 3 m | Measuring type: Breast | Chest strap: Yes | Weight: 54.4 g | Battery type: CR2032 | Number of batteries supported: 1 | Adjustable strap: Yes | Height: 11 mm | Battery life: 3.5 year(s) | Waterproof up to: 10 m | Battery voltage: 3 V | Width: 62 mm | Strap adjustment range: 63.5 - 132 cm | Operating temperature (T-T): 23 - 12 °C | Product colour: Black | Storage temperature (T-T): -5 - 50 °C