Support mobile phone version: IOS8.0 or above, Android 4.4 or higherAPP language: Chinese, English, Western, French, German, Russian, A, Dutch, Portuguese, A, Tu, Japanese, Malaysia, ThailandInformation reminder language : medium, all European languagesApplication functionStep by step: supportDistance: SupportCalories : SupportBlood pressure: supportBlood oxygen : supportInformation Reminder: QQ, facebook, whatsapp, twitter, Skype, instagram, WeChatSedentary reminder : supportAlarm clock : supportStopwatch : SupportSleep monitoring: supportLooking for a mobile phone: supportLooking for a bracelet: supportSpecifications:Button : Single touchDisplay size: 1.3 inchesResolution: 240*240Type : Oled color screenBattery Material : Lithium PolymerCapacity: 90mAhStandby time: more than two weeks