Compatibility system IOS/Android system function 6 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 call The app supports languages Simplified, English, Traditional, Greek, French, German, Italian, Spanish, Dutch, Portuguese, Russian, Turkish, Japanese, Polish, Romanian, Thai, Vietnamese, Indonesian, Korean, Arabic Device side language support Simplified, English, Traditional, Greek, French, German, Italian, Spanish, Portuguese, Russian, Turkish, Japanese, Korean, Polish, Thai, Vietnamese, Indonesian, Hebrew, Malaysian Languages supported by the manual English, French, Spain, Portugal Specification Button type: 2 physical buttons Android system: supports Android 5.0 and above versions IOS system: Apple iOS 10.0 or above Bluetooth: BT5.1 Heart rate: LC11S Product process: Zinc alloy+ABS Net weight of the body: 45 grams Screen size: 1.91 inch TFT high-definition square screen Screen resolution: 320 * 386 Screen type: IPS full angle color screen Screen material: glass Total length of wrist strap: 270 millimeters Wrist strap material: silicone Head size: 54.4 * 44.3 * 13.3 Battery type: Lithium battery Battery model: 602226 polymer Battery voltage: 3.7V Battery capacity: 340mAh Battery life: 5-7 days of normal connection and 20-30 days of standby. (Connection usage depends on personal usage) Charging method: magnetic suction charging Charging time: about 3 hours Packing list: Sports Smart Watch x1 charging cable x1 Product manual x1