Function: Answer Call,Calendar,Dial Call,Alarm Clock,Passometer,Message Reminder,Sleep Tracker,Call Reminder APP Download Available: No Screen Size: 1.54 " inch Language: French,Italian,Russian,Spanish,Portuguese,English,German Band Material: Silica Gel Style: Sport Battery Capacity: 300-450mAh Band Detachable: Yes Network Mode: None Multiple Dials: No Screen Shape: Square Brand Name: LESTOPON Battery Detachable: Yes CPU Model: MTK6261D ROM: <128MB Waterproof Grade: Not Waterproof Camera: 0.3MP Movement Type: Electronic Application Age Group: Adult GPS: No Case Material: Alloy SIM Card Available: Yes RAM: <128MB Compatibility: All Compatible System: Android OS Mechanism: No Resolution: 240*240 Type: On Wrist Function: Sedentary remind,Photograph,Stopwatch,Calculator Smart Watch: Fashion SmartWatch Color: white,black Memory: 32+32MB;Support max 32GB TF card Display: 1.54"inch IPS HD LCD;Resolution ratio;240*240 pixel Touch screen: OGS capacitive screen Bluetooth: Ver. 3.0 Size: 45.6*41.3*12.5 mm Battery: 450mAh;Stand by:More than 7days;Use for : More than 2days G-sensor: Yes Weight: Net weight:57 g ,Gross weight: 229 g