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 apps, such as 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 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:Silver 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.