DUAL CAMERA LENSES:A second HD inspection camera is built into the side of the main camera for a wider field of view. Easily switch between two 70-degree cameras for a total of a 140-degrees view to look sideways and forwards. Focal length at 1-4inch (3-10cm) for the sharpest image. Upgraded Monitor :Industrial Endoscope takes 4.3-inch Full HD color LCD digital designed, the resolution up to 1080P, support image capture, and video recording. Multi-function setting button and ports, multiple menu languages. Waterproof Probe and Tube :The flexible cable with 5.5mm camera easily passes through hard-to-reach areas. The snake camera cable holds its shape well. An IP67 waterproof design allows the camera to operate 3.28ft (1 meter) underwater. 2600mah Built-in battery :The NEW built-in 18650 lithium-ion batteries are high capacity and rechargeable, supporting up to 4-5 hours of use time in a recommended temperature range of 32°F to 113°F (0°to 45°C). Easy to operate :Built-in 4.3inch color display and rechargeable battery, this hand-held endoscope can be used immediately after booting, no need to use your smartphone to connect the WIFI and no need to download any driver software. So you do not need to worry about dirtying your phone. Monitor: 4.3-inch color IPS screen Resolution: 2.0 megapixel HD 1920*1080P Horizontal viewing angle: 70° Line length: 1M/5M Focal length: 1.2inch- 4inch /3cm-10cm Waterproof level: IP67 Lens diameter: 3.9MM/5.5MM Light source: 6 LED Lights (adjustable) Battery endurance: About 4-5 hours