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Voice assistant built-in : no Bluetooth-compatible Version : 5.0 Wi-fi : no Metrics measured : Heart Rate Monitor,Other,Blood Oxygen Monitor,Sleep Monitor Activity Tracked : Other,Steps Tracker Touch Screen : YES Category : Smart Watches Screen Material : IPS CPU Model : GR5515 Band Detachable : Yes APP Download Available : No Battery Detachable : No Resolution : 240*240 Display Size : 1.28 Movement Type : Electronic Style : Fashion Application Age Group : Adult Screen Shape : Round 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 : 220-300mah Rear Camera : None RAM : <128MB ROM : <128MB System : None Type : On Wrist Compatibility : All Compatible Language : English,ITALIAN,Japanese,German,Spanish,French,Russian,Portuguese,Polish,Turkish,Greek,Hebrew,Arabic Function : Passometer,fitness tracker,sleep tracker,Message Reminder,Call Reminder,Answer Call,Dial Call,Heart Rate Tracker,Interactive Music Origin : Mainland China Certification : CE