... , WIFI, G sensor, Gyro sensor optional.2 SD Card slots optional,VOIPl Built-in wireless module like 3G (EVDO, WCDMA,HSPA ... X, Y, Z axis3G,WIFI Wireless transmissionBuilt-in wireless module optional. Such as 3G EVDO, HSPA, HSDPA, WCDMA…GPRS, EDGEPlaybackSystemVideo SearchSearch video ... (W) x36(H) x138(D) mmNet Weight450gAccessories: 3G LIVE View & tracking Screenshot Best wifi 3G gps tracking mobile dvr