Car DVR Black Box 1.vandal-proof, waterproof,dustproof 2.HDD/SD Card ... .real time recording 4CH H.264 HD Real Time Car DVR Black Box with GPS/GPRS/3G Network AK-6204GMain Features:*Recording ... ,support +8V~+36V input, superior stability,and power for camera. *Assembly varies 3G standard(EVDO,TD-SCDMA,WCDMA),and ... after re-powered 4CH H.264 HD Real Time Car DVR Black Box with GPS/GPRS/3G Network AK-6204G