Robust Semi-Rigid Cable: Our 328FT pipe camera adopts thickened semi-rigid snake cable with a 0.28-inch (7mm) diameter, made from robust fiberglass. It excels in passability and durability, navigating bends and long pipes effortlessly. Furthermore, it also maintains outstanding resilience and durability in dark, damp conditions, effectively locating pipe blockages without breakage and tearing. Precise Locating & Distance Display: Our drain camera has a built-in 512Hz sonde transmitter for accurate location tracking. An on-screen distance counter measures the length of the cable in the sewer, enabling you to quickly locate problems when used with the locator (not included). Compatible Pipe Diameters: Straight Pipes: 0.99 - 5.90 in / 25 - 150 mm; Right Angle Pipes: 1.97 - 5.90 in / 50 - 150 mm. 10.1-Inch Large Touchscreen: Our 10.1-inch touchscreen allows for easy operations such as video recording, photos taking, and audio playback (via computer or headphone output)