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 BLUETOOTHTHE 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 WATCH HAS TWO WORKING MODE.ONE IS COMPANY MODE(BLUETOOTH), IT ENABLE TO MAKE CALL OR RECEIVE CALL OR SEND OR GET MESSAGE VIA BLUETOOTHTHE 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.NETWORK & CONNECTIVITYSIM CARD SINGLE SIM CARD (MICRO SIM CARD)FRQUENCY BAND GSM 850/900/1800/1900 MHZBLUETOOTH BLUETOOTH 3.0RAM 128MROM 64MEXTERNAL MEMORY SUPPORT TF CARD UP TO 32GBDISPLAYSCREEN SIZE 1.5 INCHSCREEN TYPE TFT LCD SCREENRESOLUTION 240 X 240 PIXELSCAMERACAMERA 0.3 MVIDEO RECORDING SUPPORTMEDIA MUSIC/VIDEO SUPPORTHAND-WRITING SUPPORTPICTURE FORMAT JPEG, GIF, BMP, PNGMUSIC FORMAT MP3, WAVVIDEO FORMAT MP4 GENERALLANGUAGES ENGLISH, CHINESEBLUETOOTH DIALER SUPPORTCONTACTS SUPPORTCALL REMINDER SUPPORTCLOCK SUPPORTANTI-LOSS SUPPORTPEDOMETER SUPPORTSLEEP MONITOR SUPPORTSEDENTARY REMINDER SUPPORTBATTERY 380 MAHTALK TIME 90 MINUTESWORKING TIME 72 HOURSSTANDBY TIME 80 HOURSSMS SUPPORTUSB PORT MINI USB 5PIN INTERFAC