http://a.co/81kbk5R
Usually goes for ~$55. Amazon Daily Deal for 3/27/17.
Make the most out of every training session with the Polar H7 Bluetooth Smart Heart Rate Sensor. It provides real-time heart rate to compatible mobile training apps, including Polar Beat and Polar Flow, via low energy Bluetooth Smart technology. Also connects with the majority of Polar heart rate monitors on the market and compatible gym equipment. Includes a soft fabric chest strap that seamlessly adapts to your body shape. User replaceable battery. Includes limited two-year manufacturer’s warranty.
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
ADVANCED TECHNOLOGY: Gym Link connects Polar heart rate monitors and activity trackers with compatible gym equipment
CALORIE COUNTER CAPABILITIES: For those who want to count the calories they burn and get basic heart rate-based features to keep their fitness training simple
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