1.GPS 3G Wifi SD card 4ch car ... input 5.Support 2pcs 32GB SD card GPS 3G Wifi SD card 4ch car DVR ,4ch ... , WCDMA, CDMA2000, TD-SCDMA ....or GPRS, EDGE, WiFi wireless transmission, optional features. • Real-time video: 100f ... CDMA .... optional, (GPRS, EDGE, WiFi wireless transmission can be customized).GPS ,G-sensor Support Module Built-inVideo Storage ... <5W; Standby<0.5W GPS 3G Wifi SD card 4ch car DVR