Polar

Short review: Polar H9 chest heart rate sensor with electrical (ECG) heart rate measurement, Bluetooth, ANT+ and 5kHz connectivity, a replaceable battery for up to 400 hours of training and a washable M-XXL soft strap., Manufacturer: Polar, Color: black, Condition: New, SKU: 113029..

Short review: Polar Verity Sense optical heart rate sensor with a dark red M-XXL armband: Bluetooth and ANT+, memory for up to 600 hours of training, up to 30 hours of operation and WR50 water resistance., Manufacturer: Polar, Color: red, Condition: New, SKU: 113281..