Battery Capacity(Mah):180<br>Screen Size(Inches):1.83<br>Model:Z81<br>Strap Material:Silicone<br>Watch Case Diameter:3.5<br>Region Of Origin:China<br>Batteries Included:Yes<br>Watch Face:Digital<br>Manufacturer:Shenzhen Kang cheng xin sheng Technology Co., Ltd<br>Power (W):0-49 W<br>Case Material:Alloy<br>Movement Type:Quartz<br>Water Resistance Level:Non - Waterproof<br>Contains Batteries Or Cells?:Batteries<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:180<br>Battery Or Cell Capacity In Grams:3.4<br>Manufacturer Address:shenzhen<br>Dg Battery Type:Lithium Lon<br>Battery Characteristics:Button Cell Battery