This watch has two working mode.
One is company mode(Bluetooth), It enable to make call or receive call or send or get message via Bluetooth
The other one is Network mode(Sim Card inserted) It enable to make call or receive call and send or get message via the sim card you inserted which means at this time this watch works as a real cellphone,you can hang out without your cellphone.
Specification
CPU: MTK6261D
SIM Card: Single SIM Card (Micro SIM Card)
Frequency: GSM 850/900/1800/1900 MHz
Bluetooth: Bluetooth 3.0
Storage: RAM 32M, ROM 32M; External memory: Support TF card up to 32GB
Display: 1.3 inch TFT LCD, 240 x 240 pixels
Music/video: Support
Hand-writing: Support
Picture Format: JPEG, GIF, BMP, PNG
Music Format: MP3, WAV
Video Format: MP4
Languages: English, Italian, German, Dutch, Spanish, French, Polish, Turkish, Portuguese, Russian
Functions: Bluetooth Dialer, Contacts, Call Reminder, Clock, Anti-loss, Pedometer, Sleep Monitor, Sedentary Reminder, Calendar
Battery: 280 mAh
Talk Time: 3 Hours
Standby Time: 180 Hours
SMS: Support
USB Port: Mini USB 5pin interface
Size: 90*90*80 (mm)
Product Weight: 55g
Gravity Sensor: Support
Note
Sync function:synchronizes Phonebook,synchronizes phone calls,synchronizes incoming calls,synchronizes messages.Smart Watch is able to receive push notifications from QQ, wechat, twitter etc.(This feature is only available to Android)