Features:- This product supports all functions for Android (Passometer, Calendar, Call Sync, Calculator, Clock, Stopwatch, messages, sync instant messages) with the Bluetooth Notice APP (BT) installed.- Bluetooth Dialer, Contacts, Call Reminder, Clock, Anti-loss, Pedometer, Sleep Monitor, Sedentary Reminder, Calendar.- Smart multiligual device with English, Italian, German, Dutch, Spanish, French, Polish, Turkish, Portuguese and Russian installed.- Support music, video, video recording, gravity sensor and handwriting. Picture Format: JPEG, GIF, BMP, PNG. Music Format: MP3, WAV. Video Format: MP4- Extreme long stand by time for 180 hours.Specifications:- SIM Card: Single SIM Card (Micro SIM Card)- Frequency: 2G GSM/GPRS 850/900/1800/1900 MHz - Bluetooth: 3.0 - Storage: RAM 128M, ROM 64M- External memory: Support TF card up to 16GB - Display: 1.56 inch TFT LCD, 240 x 240 pixels - Camera: 2.0 M - Battery: 380 mAh - Talk Time: 3 Hours - SMS: Support - USB Port: Mini USB 5pin interface - Size: 43.5 x 40 x 11.8 mm- Product Weight: 75g - Color: Black/White/RosegoldPackage:1 x Smart watch1 x USB charger cable1 x User guidanceNotice:- Please check the local mobile network carriers for the device's compatibility with 2G. This product does not support wifi. - Please note that functions for iOS are limited. For iOS, the APP does not support synchronization. Only bluetooth connection can be realized.- Please use the smart watch search for mobile phone bluetooth signal to realize bluetooth connection. - The memory card state only can display on PC. - Message function only can be realized after APP synchronization.FAQ:- How to place SIM Card and SD card? Open the back cover, remove the battery, and you will see the card slot. - Unable to switch on? Please make sure the watch is fully charged and press the power button for more than 3 seconds. - Using time too short? Make sure the watch is fully charged (2 hours at least). Please note: With the use of SIM card, the power will run out soon if the signal is poor.- Unable to charge? (1)The battery will be reduce after after few years, please check if the battery works in good condition or not. (2)Change a new charger. (3)Please check the USB interface and try again.- Bad phone call voice? Bad voice may be caused by poor signal. Please find a better place and make sure the phone is not too far away from you.- Unable to recognize SIM card? SIM Card: Single SIM Card (Micro SIM Card), Frequency: 2G- Unable to download APP? There is a possibility that the watch doesn't have enough memory for downloading apps. Please use SD card.