The new generation of portable video endoscopes (also available with 2-way or 4-way rotation) adopts the principle of digital video imaging. The 5.5mm diameter probe comes with a built-in light source and a large screen LCD display for clear imaging. The structure is compact and easy to carry. Replacing the disadvantages of bulky and inconvenient operation and viewing of old-fashioned optical instruments, it can be viewed by multiple people on site and can take photos/videos/store and output pictures or videos. It can be widely used for internal structural observation of concealed projects such as bridges, tunnels, buildings, pipelines, as well as internal observation of industrial equipment components.

Performance characteristics:
The small aperture probe can easily detect holes or masking spaces with a diameter greater than 5.5 millimeters, and the wide-angle camera can see high-resolution images of 640 × 480
Ultra lightweight and portable, the probe light source is provided by the host, and the whole machine is powered by lithium batteries
Large screen color LCD display with clear and realistic color display
Multiple people on site can observe and take photos/videos/store and output pictures or videos
Technical parameters:
Front end probe: CMOS image sensor
Resolution (dynamic/static): 320 (H) * 240 (V)/640 (H) * 480 (V)
Main (insertion tube) diameter: 5.5mm
Frame rate:~ 30fps
Quiet to Noise Ratio (S/N): 42dB decibels
Auto focus, auto exposure, auto white balance
Field of View (FOV): 67 °
Observation aperture: 15mm-100mm
Display screen: 3.5 "TFT LCD (3.5-inch TFT color LCD display screen), 320X240 pixels
Light source: Four high brightness white LEDs automatically provide illumination
Power Supply: 3.7V rechargeable lithium polymer battery
Interface: MINI USB interface 1.1/AV output/AV input
Video output mode: NTSL&
PAL， Can be connected to a television or computer display screen
Image storage: SD card, with a capacity of over 2G
Image compression mode: MPEG4
Static image storage mode: JPEG (640X480 resolution)
Video recording mode: ASF (320X240 resolution)
The function keys include:
1. Quick photo button
2. Quick recording button
3. Quick Preview Key
4. AV output key
5. Image/video browsing keys