Hammerhead Heart Rate Monitor 2.0 C1

Adjustable, washable, elastic strap Strap length: 28”-48” or 711-1219mm Weight: 15 grams (pod) 28 grams (strap) Connection: 2x Bluetooth channels and ANT+ 30m (90f) Water-proof Battery life: Approx. 900+ hours Battery type: User-replaceable CR2032 3 volts (included)