1.Mini Mobile DVR, 4 channel, GPS, 3G,WIFI 2.H.264 ,VOICE Talking 3.Sending alarm ... industrial materials including the industrial connectors special for mobile dvr.l Built-in GPS, WIFI, G sensor, Gyro sensor optional.l Built ... .Accessories: 3G LIVE View & tracking Screenshot Best SD Card 3G gps car Mobile DVR,support wifi