My new endoscopic camera does allow help of missing bolts inside the engine. It is easy to connect to my phone by simple plug. And downloading USBWEBCAMERA from Google play. Now the company did send download information, but downloads did not work for me. Also has a brightest turn dial for giving more light to see while using. If the light is on brightness high level. The camera does seem to feel warm. Oh my camera came in handy for finding a snake den of babies under my walkway porch too. I can easily view on my phone screen. As I look anywhere. This comes in handy for mechanics or just home use. I was given the opportunity to get this item FREE for my personal unbiased honest review of my testing experiences also not in a relationship with seller to form this honest opinion of their products.