Polar H7 Bluetooth Heart Rate Sensor & Fitness Tracker

Amazon.com Price: $49,99 (as of 08/03/2021 00:11 PST- Details)

HEART RATE MONITOR: Provides live, accurate heart rate to compatible mobile training apps through Bluetooth Smart technology
FITNESS TRACKER: Waterproof heart rate sensor compatible with all Apple iPhone, iPads, and Android Devices
STRONG BATTERY LIFE: For optimal battery life, detach transmitter from chest strap after every use