Smart Watch With Support Nano SIM Card and TF CardFunction: Permanent Calendar,Answer Call,Week,Remote Control,Message Reminder,Sleep Tracker,Call Reminder,Calendar,Dial Call,Alarm Clock,Push Message,Passometer,24 hour instruction,Fitness Tracker Band Detachable: No Compatibility: Android Band Material: Silica Gel Language: French,Italian,Russian,Turkish,German,Spanish,Portuguese,English Style: Sport Multiple Dials: No Mechanism: Yes ROM:<128MB Camera: None Application Age Group: Adult GPS: No