glassninja
Here is a Bluetooth & ANT+ heart rate armband that pairs with your smartphones, watches, and GPS bike computers to help you keep track of your workouts. It has a water-resistant design and offers real-time heart rate and calorie tracking.
The battery lasts up to 30 hours. Two adjustable bands are include. You can use this armband with Apple Watch and Apple TV. Costs under $80 at this time.
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