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
Polar H7 Bluetooth Smart Heart Rate Chest Transmitter – HeartRateMonitorsUSA.com
Heart Rate Sensors: Polar Verity Sense vs Polar H10 and Polar H9