We must clarify some facts to help you not get confused. There are completely different products in a highly similar shell. Our NVG shell has a functional structure inside, which is to achieve the replacement of the digital tube, just like traditional NVG. Our digital tube has a variety of performance configurations, which can be switched at will according to your application environment. (Gen5 does not have this function). The battery pack interface of all our host machines adopts Fisher 4-pin model. The battery pack and cable are compatible with all our models. Our electronic ...