POLAR Heart Rate Sensor H1 Watch Compatible Bluetooth Smart Monitor, New Battery | eBay
Polar H1 Heart Rate Sensor with Strap Size M-XXL #92043528 - New Factory Sealed | eBay
PolarGlobal on Twitter: "Today we've launched a new heart rate sensor: Polar H9! - Bluetooth, ANT+ and 5 kHz technologies - Battery life of 400 hours - Compatible with Polar Club Discover