This arm band features advanced optical heart rate technology, it can monitor your heart rate and transmit to your phone via ANT+ and BT technology. It is rechargeable, comfortable and compatible with most fitness Apps. It is a great for those who love sports.
Features: Advanced optical heart rate technology accurately tracks your heart rate, calories burned, distance, pace and more. ANT+ and BT technology, connect to smartphone, bike computers, watches, fitness equipment, etc. 90mAh rechargeable battery works up to 20 hours continuously. Adjustable, elastic strap fits comfortably on your forearm. Compatible with most popular fitness Apps, such as MooFit, Endomondo, Runtastic, Wahoo Fitness, Strava, Sports Tracker.