I`ve been working with this company for several years. Unfotrunatelly, this company produce very low-quality products. The endoscopes I recently ordered, 3 of them have big problems with cameras quality. One camera has broken dots that can`t be wiped off the camera lens, as well as entire image as in fog. The rest of the cameras have bifurcation of objects in the video, like ghostly traces. I have contacted the company sales person many times to have them to solve the problem. But Gaea demanded me to send the cameras back to China to test them. I explained her that delivery fee will cost to much, almost as endoscope cost to which she told me to send by regular post, but regular post delivery will take about 1 month one way. She told me that other her customers send so (!). It means that not only me but other customers met such quality problem. Seems this company never check quality of it`s products. So never buy from this company, otherwise you will loose the money and time