We have stocked two versions of this reversing camera (from the same factory) for a number of years now. This is the highest spec version using a relatively new technology called AHD. AHD is an open source Analogue High Definition technology that has become dominant in the industry.
The factory that produces this camera is the only factory we would trust to produce this cylindrical style reversing camera. Similar looking cameras are notorious for leaking. The cameras that come from the factory we use just simply don't have this issue. We pay around double the price of other factories similar looking products, but in terms of build quality, reliability, and performance, it is well worth the extra. You get what you pay for.