specifications: 1. Screen type: TFT LCD 2. Screen size: 3.5 inch 3. Definition: 480(W)X234(H) 4. System: PAL/NTSC Auto switch 5. Nominal voltage: 12V, red line: Positive; Black line: Negative 6. Power consumption: 3W MAX 7. Working environment: -20~658. 8. Sensors:2/4 optional 9. Rearview camera: various types optional. Features: 1. Universal clip-on type for all types of cars with rear view mirror. 2. Auto switch to display rear view when reversing gear is engaged. 3. Special lens covered on the montior can work as a normal rear view mirror with anti-glare treatment and broadened view, when monitor is shut down.