Topeak® Panobike Heart Rate Monitor

Tech: Bluetooth® Smart (BLE 4.0) super low energy technology
Fit Chest: 70-120 cm / 27.5”- 47.2”100-150 cm / 39.4”- 59.0” (with optional chest strap extension)
Battery Lifetime (approx): 900 hours (2.5 yrs. with 1 hr/day use)
Battery: CR2032 x 1 pc (included)Transmission Range: < 5 meter (16.4 ft)
Waterproof: IPX 5
Operating temperature: -10°C ~ 50°C (14°F~122°F)
Weight: 46 g / 1.62 oz (strap + monitor)