Polar H10 review: A tried and tested heart rate chest strap
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
Powr Labs Bluetooth Heart Rate Monitor Armband - China Heart Rate Monitor, Armband Monitor | Made-in-China.com