3.5/5.7 inch Industrial Endoscope Videoscope Camera: ** It can inspect all kinds of industrial pipeline or small equipment space for comprehensive inspection, such as corrosion,foreign body, weld, sunder, parts wear and internal processing, etc. ***360�°position control,max bend angle up to more than 180�°for one side,super bend angle, with firm lock *** Layers Tungsten wire, more corrosion resistant and solid durable. *** Hand-hold integrated design, 3.5/5.7 inch high definition screen,portable,easy to operate. *** Dismountable battery .Lenghten the working time. Lithium battery, *** Battery capacity:2 set 3.7v,2600M AH*. Application: Automobile manufacturing, casting and parts processing, car inspection,pipe manufacturing, machinery manufacturing, fire rescue,criminal investigation and other fields.