Rainbuvvy DM100 LTE GPS

Chip: MT6739 Memory combination:RAM: 1G/3G ROM: 16GB/32GB Camera: 5MP Support band: 2G: GSM：B2 B3 B5 B8 3G: WCDMA ：B1 B2 B5 B8; TD-SCDMA:B34/39 4G: LTE-FDD：B1 B2 B3 B5 B7 B8 B12 B20; LTE-TDD：B38 B39 B40 B41(100MHz) WIFI: Support 2.4G\5G Bluetooth: 4.0 Display: 2.86 inch LCD 480*640 Resolution Capacitive touch screen PLEASE NOTE: 1. If there're any questions during using, please contact us first before returning. We will definitely help you solve it. 2. About SIM card a. If your watch is unable to recognize the SIM card, please make sure that the card has been inserted correctly. You will hear a clicking sound when SIM card was inserted correctly. b. All Network frequency bands in the North America: TDD: Band 41(uS)/42(CA); FDD: Band 2/4/5/7/12/13/17/25/26 Network frequency band supported by our smart watch: FDD: Band 2/5/7 Support Operators: iConnect (Choice Phone), AT&T, nTelos, T-Mobile, U.s. Cellular. (Note: Because the network signal of each region is different,please confirm with your local operator before purchasing.) 3. About Connection Find the "Assistant" app on your watch --- Click "Connect Phone" --- Enter the "wiiwatch2" app on your phone --- Click on "connect device" --- "Scan QR code"  (You could also refer to page 9 of the manual.) PS: If the connection is unsuccessful, please uninstall the "wiiwatch2" app and clear the Bluetooth pairing record. Then reset the watch and try again. (Clear pairing record: 1.Click "small trash can icon" at the bottom left corner of the QR code page on the watch;  2. Clear the pairing record in the Bluetooth list on the mobile phone.) Compatible Phone Models: iOS, Android Connectivity Technology: Wi-Fi,Cellular,Bluetooth,GPS Included Components : Smart watch,Charger,Watch band Special Feature: 4G/WIFI/Bluetooth/Waterproof WATCH YOUR HEART: Equipped with a heart rate sensor and a built-in heart rate monitor, you can check your heart rate during a workout; see your resting, walking, breathe, workout, and recovery rates throughout the day; or take a new reading at any time.