gt08 dz09 bluetooth smart watch sports wristband bracelet smartwatch with sim card slot and nfc health u8 watchs for android smartphone

classic and customizable style,1.54" ips lcd 2.5d radian capacitive touch screen for easy operation.built-in sim card slot and tf card slot,support nfc functions and bluetooth connection it becomes a standalone watch phone with sim card inserted, working in 2g gsm 850/900/1800/1900 mhz network. you can send and read texts, make or receive calls on your watch.simply like a gsm cell phone. without sim card, it works as a cell phone companion,receiving and making calls, getting texts via bluetooth.