Product Review

Workout more efficiently and burn more calories Comfortable armband accurately measures heart rate. No chest strap required Rechargeable battery provides up to 8 hours of workout time Wireless workout from up to 100 ft. away from your device! Compatible With: iPhone 5S iPhone 5C iPhone 5 iPhone 4S iPad mini with retina iPad mini iPad (4th gen) iPad (3rd gen) iPod touch (5th gen) Samsung Galaxy S IV The Rhythm+ Optical Heart Rate monitor's ANT+ Connection works with Garmin Forerunner, Vivo Fit, Suunto ambit 3, Viiiiva, and completely takes the place of your heart rate monitoring chest strap. The Bluetooth 4.0 connection works with all of the popular fitness tracking apps such as digifit, wahoo, strava, mapmyfitness, endomondo, runkeeper, runtastic, ismoothrun, and more!