Usage for hash tag: WristbasedHeartRate

...Battery Life, Wrist-based Heart Rate, Military-level Durability, Sleep and Recovery** **#PolarGritX #MultisPortGPSSmartWatch #WristbasedHeartRate** The Polar Grit X is a rugged multisport GPS smartwatch with an ultra-long battery life, wrist-based heart rate, military-level durability, and...