Scosche Rhythm R+2.0: Waterproof/Dustproof Armband with ANT+ & BLE Bluetooth Smart for Hyper Accurate Workout Heart Rate Monitoring with Wahoo, Peloton, LED Monitor, DDP Yoga, Strava

HIGH INTENSITY TRACKING: Utilize the integrated optical sensor and built-in accelerometer to precisely track your heart rate in real-time to monitor the intensity of your workout – helping to ensure you are keeping your heart rate in your target zone.
EXTENDED BATTERY LIFE: Powerful long-lasting rechargeable lithium ion battery with integrated battery cell for extended use. Enjoy up to 24 hours of use time on the full charge to get the most out of your workouts and activities, plus a low battery indicator light to help you track battery life.
DURABLE & WATERPROOF: The tough, waterproof materials provide long-lasting usage without compromising on performance. Its waterproof rating of IP68 means its perfect for swimming, running outdoors and other intense workouts. It can withstand the elements and keep you going in any environment.