Battery Capacity(Mah):180<br>Screen Size(Inches):2.01<br>Model:H21<br>Supported Operating System:Android,iOS<br>Strap Material:Silicone<br>Watch Case Diameter:3.5<br>Watch Connectivity:Bluetooth<br>Watch Features:Clock Display,Notifications,Phone Call<br>Region Of Origin:China<br>Batteries Included:Yes<br>Watch Face:Digital<br>Manufacturer:Dongguan Langchen Technology Co.,Ltd<br>Power (W):0-49 W<br>Case Material:Metal<br>Movement Type:Quartz<br>Water Resistance Level:Non - Waterproof<br>Contains Batteries Or Cells?:Cells<br>How Batteries Are Packed:Batteries Built-In<br>Battery Or Cell Weight In Grams:3.4<br>Dangerous Goods Or Hazardous Materials:Yes<br>Number Of Batteries Or Cells:1<br>Battery Or Cell Capacity In Wh:0.66<br>Manufacturer Address:Dongguan<br>Dg Battery Type:Lithium Lon