B00B13A6R2 Topeak PanoBike Heart Rate Monitor

Make sure this fitsby entering your model number. Transmission Range: 50+ft Tech Bluetooth Smart super low energy technology; Battery Lifetime 1800 hours Open API allows to work with PanoBike App and other Apps with Bluetooth 4.0 connection program; IPX 7 waterproof rating Weight 32 g/1.13 oz. (strap). 14 g/0.49 oz. (monitor) Compact, low profile heart rate monitor with soft fabric chest strap molds to your body shape and allows comfortable, full range of motion Unique Bluetooth Smart algorithm extends battery lifetime up to incredible 1800 hours (5 yrs. lifetime if workout 1 hour per day)