... up to RoHs standard .l Elegant and industrial design, Mini size, for easy installation, more concealling.Dimensions, 112(W ... highest level , 4 is the lowest level.Recording Mode support timed recording, alarm recording, manual recording.AudioAudio InputMic or ... induce the vehicle X, Y, Z axis3G,WIFI Wireless transmissionBuilt-in wireless module optional. Such as 3G EVDO, HSPA, HSDPA, WCDMA…GPRS, ...