Battery Life : 7Days Dial Window Material Type : Hardlex Band lengthmm : 210 Band widthmm : 22 SIM Card Slot : NO Voice assistant built-in : YES Bluetooth-compatible Version : 5.3 Metrics measured : Heart Rate Monitor,other,Blood Oxygen Monitor,Sleep Monitor,Blood Pressure Monitor Activity Tracked : other,Steps Tracker,Distance Tracker,Activity Tracker Touch Screen : YES Category : Smart Watches App name : RDFit Screen Material : AMOLED CPU Model : ATS3085L Model : DM58 APP Download Available : Yes Battery Detachable : No CPU Manufacturer : MediaTek Movement Type : Electronic Style : fashion Band Material : Silica GEL Waterproof Grade : Professional Waterproof SIM Card Available : No Mechanism : Yes Multiple Dials : Yes GPS : Yes Network Mode : None Rear Camera : None ROM : 256mb System : Android Wear,Proprietary OS,Android OS,IOS,Wear OS,Color OS,HarmonyOS,FreeRTOS,Wacth OS,Zepp OS,DuWear,Tizen OS Type : On Wrist Compatibility : All Compatible Language : English,Russian,Spanish,POLISH, Portuguese,Turkish,Italian,French,german,Norwegian,Korean,japanese,UKRAINIAN,HEBREW,Dutch,Arabic,Indonesian,Greek Function : Shock Resistant,Passometer,fitness tracker,sleep tracker,Message Reminder,Call Reminder,Answer Call,Dial Call,REMOTE CONTROL,Push Message,tourbillon,Big Three Needles,24 hour instruction,Chronograph,Alarm Clock,Small Second,World Time,Permanent Calendar,Multiple Time Zone,GMT Two Places,Perspective Window,week,Month,Moisture Measurement,Heart Rate Tracker,Interactive, Music,Noctilucent,Calendar,compass,Lighting,Countdown,Calculators Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.