Backed By Scosche's 1 Year Exchange Warranty and Lifetime Tech Support!. COMFORTABLE TO WEAR: The R+2.0 is lightweight and the soft, stretchy, washable, and replaceable armband fits snuggly but not too tight so no restricted movement. Easily adjustable from 6.7 inches to 15.75 inches to fit everyone with three placement options, upper forearm, biceps, or triceps. UNIVERSAL CONNECTIVITY: Great for use with smartphones, tablets, smart and sport watches, exercise equipment or any device that support Bluetooth Smart or ANT+ heart rate data. Provides up to 100 ft of range and compatibility with over 200 fitness apps and fitness equipment such as Strava, Peloton and many others!. WATERPROOF/DUSTPROOF: The IP68 waterproof & dustproof rating means its durable enough to use while swimming, mountain biking, running outdoors or just about any workout. LONG BATTERY LIFE - Extended use rechargeable battery tracks your workouts for up to 24 continuous hours. BUILT-IN ONBOARD MEMORY - Onboard built-in memory stores up to 13 hours of workout time before you need to download the info via ANT+ FIT file transfer. SUPERIOR ACCURACY: Optical sensor technology measures blood flow to give you a highly accurate heart rate reading with all skin tones. A built-in accelerometer further assists in providing hyper-accurate measurements.allowing you to monitor the intensity of your workouts and adjust accordingly.

Battery Description: Lithium-Ion. Sensor Type: Wearable. Battery Life: 24 Hours. Item Weight: 0.01 Ounces. Item Dimensions LxWxH: 3.94 x 3.94 x 0.39 inches. Screen Size: 0.96 Inches. Compatible Devices: Smartphones,tablets, watches, Bluetooth Smart and ANT+ compatible devices. Color: Black. Material: Canvas. Brand: Scosche.