HIGHOT Black 2M 6.56FT Waterproof USB Borescope Endoscope Inspection Copper Tube Pipe Head Camera with 4 LED Lights High resolution with 1/6 CMOS camera; Length:2m; Outside diameter:14.5mm/0.57inches 4 LED low lux luminance lights can work better when the light very dark Brightness, contrast, hue and chorma can be adjusted Can record video, and save the video in the PC Used to check and watch internal situation