Compatibility systemIOS/Android systemfunction6 sets of theme styles, custom dials, step counting, brightness adjustment, multiple exercise modes, sleep detection, heart rate, blood pressure, blood oxygen, breathing training, information push, remote music control, remote photography, real-time weather, mobile phone search (connected to the phone), alarm clock, stopwatch, do not disturb mode, female physiological cycle, timer, game, voice assistant, Bluetooth callThe app supports languagesSimplified, English, Traditional, Greek, French, German, Italian, Spanish, Dutch, Portuguese, Russian, Turkish, Japanese, Polish, Romanian, Thai, Vietnamese, Indonesian, Korean, ArabicDevice side language supportSimplified, English, Traditional, Greek, French, German, Italian, Spanish, Portuguese, Russian, Turkish, Japanese, Korean, Polish, Thai, Vietnamese, Indonesian, Hebrew, MalaysianLanguages supported by the manualEnglish, French, Spain, PortugalSpecificationButton type: 2 physical buttonsAndroid system: supports Android 5.0 and above versionsIOS system: Apple iOS 10.0 or aboveBluetooth: BT5.1Heart rate: LC11SProduct process: Zinc alloy+ABSNet weight of the body: 45 gramsScreen size: 1.91 inch TFT high-definition square screenScreen resolution: 320 * 386Screen type: IPS full angle color screenScreen material: glassTotal length of wrist strap: 270 millimetersWrist strap material: siliconeHead size: 54.4 * 44.3 * 13.3Battery type: Lithium batteryBattery model: 602226 polymerBattery voltage: 3.7VBattery capacity: 340mAhBattery life: 5-7 days of normal connection and 20-30 days of standby. (Connection usage depends on personal usage)Charging method: magnetic suction chargingCharging time: about 3 hoursPacking list:Sports Smart Watch x1charging cable x1Product manual x1