VEVOR Sewer Camera, 393 ft/120 m, 9" Screen Pipeline Inspection Camera with DVR Function, Waterproof IP68 Camera with 12 Adjustable LEDs, with a 16 GB SD Card, for Sewer Line, Home, Duct Drain Pipe
It is recommended to use it in a pipe with a diameter of about 20cm and a water depth of about 10m. If the inner diameter of the well is too large, the cable will be curled directly.