Fitbit Charge 3 Fitness Activity Tracker

Better measure calorie burn, understand resting heart rate & more with 24/7 heart rate tracking and a battery life of up to 7 days (varies with use and other factors). Charge time (0 to 100 percent): 2 hours. The operating temperature is 10 to 45 degrees Celsius

Choose from 15 plus exercise modes like run, bike, swim, yoga, circuit training and more, set goals, and get real-time stats during your workouts to see how you can keep getting better; with aerospace-grade aluminum, a smooth flush case and Corning Gorilla Glass 3, Charge 3 is comfortable and durable.

Automatically record time spent in light, deep and REM sleep stages and see activity trends, health insights, and personalized guidance in one place with Fitbit today; Fitbit products are compatible with most devices that have the following operating systems: Apple iOS 11 and higher, Android OS 7.0 and higher, or Windows 10 v1607 or higher.

Swim-proof and water-resistant to 50 meters, so you can track swims and wear in the shower (we do not recommend wearing Charge 3 in a hot tub or sauna). Also, connect to Smartphone GPS in real-time, pace and distance during outdoor runs and rides. Radio transceiver: Bluetooth 4.0.

Stay connected to your day with everyday apps for weather and more and get called, text, and smartphone app notifications on your wrist. Small band: fits wrists 140 millimeters to 180 millimeters in circumference, large band: fits wrists 180 millimeters to 220 millimeters in circumference.