As the proverb says, "Forewarned is forearmed". So if you own a valuable car, you should equip yourself with this 4-channel car digital video recorder to assist you in recording driving route, license numbers, the situation that passengers get on or off the car and what happened when you're not in the car. Adopting high grade industry standard and designed according to the various operating environment in different cars, our 4-channel car digital video recorder is featured with diversified recording modes, compact size, easy installation, shock & heat resistance and stable performance. A helpful companion for all car owners    Features: No-seam recording technology.  Support SD card (is not included) up to 32GB, more convenient and vibration-proof than hard disk version.  Support four channel 4pin connector video and audio input, one channel AV connector video and audio output.  Support IR remote control.  Special design of encrption to protect recording files.  Support wide range of voltage input from 8V to 36V.   Specifications: Compatible with: apply to all kinds of cars;  Operating language: Chinese/English;  Password safe: user password and administrator password two-class administration;  Video input: 4ch;  Video output: 1ch;  Video standard: PAL, NTSC;  Video format: AVI;  Image compression: H.264;  Audio input: 4ch port;  Audio output: 1ch port;  Image format: CIF/HD1/D1;  Recording storage: SD card;  Built-in accelerometer G - Sensor: support;  Power input: 8-36V;  Power output: 12V;  Working temperature: -40℃-80℃;  Product size: 18 * 14 * 4cm / 7 * 5.5 * 1.6in;  Product weight: 532g / 18.8oz;  Package size: 22 * 16 * 7.5cm / 8.7 * 6.3 * 3in;  Package weight: 746g / 26.3oz;   Note: Please confirm that the battery voltage is between 8V-36V. If surpass the range, it would burn the equipment.   Package List: 1 * Mobile DVR;  1 * Remote Controller;  1 * Power Input Cable;  4 * Audio / Video Cables;  1 * AV Output Cable;  1 * Sensor Cable;  1 * CD(contains English User Manual);  2 * Keys