Band Detachable : Yes APP Download Available : Yes Battery Detachable : No Resolution : 240*280 Display Size : 1.69 Inch Movement Type : Electronic Style : Fashion Application Age Group : Adult Screen Shape : Square Case Material : Carbon Fibre Band Material : Stainless Steel Waterproof Grade : Life Waterproof SIM Card Available : No Mechanism : No Multiple Dials : Yes GPS : No Network Mode : None Battery Capacity : 220-300mah Rear Camera : None RAM : <128MB ROM : <128MB System : Android OS Type : On Wrist Compatibility : All Compatible Language : English,Russian,Spanish,French,German,Korean,Japanese,Ukrainian,Arabic Function : Passometer,fitness tracker,sleep tracker,Mood Tracker,Message Reminder,Call Reminder,Answer Call,Dial Call,Push Message,Alarm Clock,Heart Rate Tracker,Interactive Music,Thermometer,Calendar,Calculators Certification : NONE smart watches function:1 : : Blood Pressure smart watches function::2 : : Pedometer,Stopwatch smart watches function:3 : : Music Control smart watches function:4 : : Anti-lost smart watches function:5 : : Notifications push smart watches function:6 : : sleep monitoring smart watches function:7 : : Multip sports mode smart watches function:8 : : upport OTA upgrade smart watches function:9 : : Blood Oxygen smart watches function:10 : : Clock smart watches function:11 : : Bluetooth-compatible Camera smart watches function:12 : : Weather smart watches function:13 : : SMS alerts push smart watches function:14 : : sedentary reminder smart watches function:15 : : call remind feature:1 : : smart watch