Band length[mm] : 240 Band width[mm] : 49 Weight[g] : 61.3 SIM Card Slot : no Voice assistant built-in : YES Bluetooth-compatible Version : 5.0 Wi-fi : NO Metrics measured : Heart Rate Monitor,Blood Oxygen Monitor,Sleep Monitor,Blood Pressure Monitor,Body Temperature Monitor Activity Tracked : Other,Steps Tracker,Calorie Tracker,Activity Tracker Touch Screen : YES Category : Smart Watches App name : RDFit Screen Material : TFT Band Detachable : Yes APP Download Available : Yes Battery Detachable : No CPU Manufacturer : qualcomm Resolution : 420*486 Display Size : 2.16inch Movement Type : Electronic Style : Fashion Application Age Group : Adult Screen Shape : Square Case Material : Alloy Band Material : Silica gel Waterproof Grade : Life Waterproof SIM Card Available : No Mechanism : Yes Multiple Dials : Yes GPS : No Network Mode : None Battery Capacity : 300-450mah Rear Camera : None RAM : <128MB ROM : <128MB System : Android Wear Type : On Wrist Compatibility : All Compatible Language : English,Russian,Spanish,Polish,Portuguese,Turkish,Italian,French,German,Norwegian,Japanese,Hebrew,Dutch,Arabic,Indonesian Function : Passometer,fitness tracker,sleep tracker,Message Reminder,Call Reminder,Answer Call,Dial Call,Push Message,Tourbillon,Big Three Needles,24 hour instruction,Chronograph,Alarm Clock,Small Second,World Time,Permanent Calendar,Power Reserve,Month,Moisture Measurement,Heart Rate Tracker,Interactive Music,Noctilucent,Thermometer,Calendar,COMPASS,Countdown,Calculators Certification : CE smart watches function:1 : Blood Pressure smart watches function:2 : Notifications push smart watches function:3 : Music Control smart watches function:4 : Multip sports mode smart watches function:5 : Blood Oxygen smart watches function:6 : Bluetooth Camera smart watches function:7 : SMS alerts push smart watches function:8 : call remind smart watches function:9 : smart watch men smart watches function:10 : smart watch 2021 smart watches function:11 : smart watch 2023 smart watches function:12 : smart watch band smart watches function:13 : smart watch men android smart watches function:14 : smart watch women smart watches function:15 : smart watch smart watches function:16 : sedentary reminder smart watches function:17 : Weather smart watches function:18 : Clock smart watches function:19 : upport OTA upgrade smart watches function:20 : sleep monitoring smart watches function:21 : Anti-lost smart watches function:22 : Pedometer,Stopwatch smart watches function:23 : Blood pressure, blood oxygen, heart rate monitoring smart watches function:24 : AI voice assistant smart watches function:25 : NFC access control smart watches function:26 : Short video assistant smart watches function:27 : Raise your wrist to brighten the screen smart watches function:28 : bluetooth music smart watches function:29 : Bluetooth information