System:Android OS,IOS Function:Passometer,fitness tracker,sleep tracker,Message Reminder,Call Reminder,Answer Call,Dial Call,Push Message,24 hour instruction,Chronograph,Alarm Clock,week,Month,Heart Rate Tracker,Interactive Music,Noctilucent,Thermometer,Calendar,Countdown RAM:128MB SIM Card Available:No Type:On Wrist Language:English,Russian,Spanish,Polish,Portuguese,Turkish,Italian,French,German,Korean,Japanese,Hebrew,Dutch,Arabic,Indonesian,Greek Network Mode:None GPS:No Multiple Dials:Yes Battery Capacity:220-300mah Mechanism:Yes Origin:Mainland China Compatibility:All Compatible ROM:128MB Rear Camera:None Waterproof Grade:Life Waterproof Band Material:Silica gel Battery Detachable:No Screen Shape:Round Resolution:360*360 Screen Material:TFT Display Size:1.32inch Certification:CE Application Age Group:Adult Style:Fashion Movement Type:Electronic APP Download Available:Yes Case Material:Alloy Band Detachable:Yes；Durable, no deformation and expansion；Comfortable hand feeling, can protect the mobile phone shell from external damage in all directions