... length:1m,2m,3m,5m Video flexible endoscope with 3.5 inch color TFT LCD Monitor Features: Function:photo,video,memory,audio ... (working time:4-6 hours)Portable Industrial Endoscope with 3.5 inch color TFT LCD Monitor specifications:Specification(Body part)3.5 ... slot5Battery cover6DC in7Video out8USB interface (port)Accessories: Video flexible endoscope with 3.5 inch color TFT LCD Monitor