Ai-laiker New Bluetooth Smart Watch K8 Android 4.4 3g Wcdma Mtk6572 Webcam Wifi Fm Camera Network Support: GSM/GPRS/EDGE/WCDMA, 2G GSM: 850/900/1800/1900MHz,3G WCDMA: 850/2100 MHz Dial,hands-free,phone records, phone book, Text messaging on mobile phones synchronous push by bluetooth(need to install mobile client application app) Display Size: 1.54 inch OGS, Capacitive screen Resolution: 240 x 240 Memory Card: Support 2GB-32GB TF Card Band: 850/900/1800/1900MHz Bluetooth: 2.0