Polar H10
TECH SPECS 
SizeElastic strap
ChargingReplaceable battery
BatteryCR2032
Battery lifeup to 400 h
Water resistanceup to 30 m
WeightSensor 21 grams, strap 39 grams
SensorHeart rate sensor
ConnectivityBluetooth (supports concurrent connections)
Internal storageYes
METRICS 
Heart rateYes
Heart rate variabilityNo
Running metricsKeeps track of your heart rate with multiple target zones, calories burned, steps taken and distance.
Swim statisticsTransfers heart rate information while swimming with products which support 5 kHz transmission
OtherCompatible with indoor gym equipment
GoPro connectivity
Choose your favorite activity from 100+ sport profiles and get real-time voice guidance while you train.
LINKS 
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Amazon US rating4.0 out of 5 stars
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