specification: 

Image Pick-up device	1/4 Sharp CCD
Number of Pixels	NTSC:512(H)×492(V)
Horizontal Resolution	420 TV Lines
Auto Gain Control	Auto
Usable Illumination	0Lux (F:1.2) with 6 IR  LED
IR projecct distance	5 meters base on 6 IR LED
Water resistance	IP67~68
Video Output	1.0Vp-p 75Ω , Negative
Electronic Shutter Time	Auto:NTSC 1/60-1/100,000Sec,
Operation Temperature	-10- +50 RH 95% Max
Storage Temperature	-20-- +60 RH 95% Max
Gamma Characteristic	0.45
The lens focal length and angle	2.8mm 120°
White Balance	Auto
Scanning System	NTSC 525 Lines, 60Field/Sec
Sync System	Internal Synchronization
Power Supply	DC12V±10%,250mA
Weight	280g
Size	70(W)*40(D)*30(H)mm

features:

1.120degree wide angle of view

2.water proof design

3.sign direct reversing way

4.small and concealed,no negative effects on the car apperance.

5.easy installation without hurt car body

6.2.4GHZ wireless transimitter and receiver option