1. 4cm 5m observation: Longer focal length can not only capture close range. Enlarge the focal length from 4 cm to 5 m, and this type of endoscope will be longer and larger. Even if there is a gap between the inspection camera and the observed object, the inspection process will be easier, because you don't have to worry about not reaching the correct position to capture a clearer image. 2. Easy to use: Use it immediately after starting up, without installing any APP, which is convenient for you to work more intensively and effectively. Builtin rechargeable battery, continuous working time is about 3 4 hours. 3. Professional industrial endoscope USB endoscope is made of highquality materials with strong durability and long life. The 4.3 'color IPS screen allows you to view easily. Industrial endoscope camera is a necessary tool for mechanics, car enthusiasts and plumbers. 4. Semirigid serpentine cable: We use highquality metal gooseneck. This gooseneck can bend and maintain its shape better than any other cheap hard wire. You can shape it according to your special purpose.