Forget The Screen, Go Outside Light As ATape:It is more professional and easier torun. It can be use.d with JChealth App(Support both Android & IOs) to accurately record every movemert exercise and support synchronization of third-party apps, such as google fit, strava,etc.Track Activity Data Throughout Your Day Not Only Smart Bracelet,But Also Decoration Fashion design fordaily use,a new style of bracelet, replaceable and colorful. All-Weather Heaalth Monitoring Take Care YourBody More ThanYourself 24-hour autonnatic sleep moritoring, take are of your sleep quality.Get Your SleepQuality, Steps,distance and Calorie consumptionThrough the JChealth App(Su)pport both Android & IOs), you can easily track ycur sleep quality ard sleep history in the past 30 days Colour:Black Gray Material:Plastic Package Contents: 1x Smart Watch 1x USB Magnetic Charger 1x English User Manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.