Because there is a protective film on the screen, the stamp is on the protective layer, please don't worry, it is original and never used, all in all, if you have any dissatisfaction with the screen, please tear off the protective film. Tear off the green tab in the corner of the screen. 

What is hard cable? What is the difference between flexible cables? Semi-rigid cables can be bent and hold their shape to enter a variety of tight places to meet different usage needs. 

Because there is a protective film on the screen, the stamp is on the protective layer, please don't worry, it is original and never used, all in all, if you have any dissatisfaction with the screen, please tear off the protective film. Tear off the green tab in the corner of the screen. 

Tear off the protective film on the screen, clean the camera lens, on the setting page, set the resolution to 1920*1080, please adjust the led light to the maximum, the endoscope needs to focus, the viewing distance is 4cm-5M, you can find it in Find the best clear distance within this range, 4cm~15cm is recommended, this distance is very clear, and you can even read the words on the manual clearly. 

What is hard cable? What is the difference between flexible cables? Semi-rigid cables can be bent and hold their shape to enter a variety of tight places to meet different usage needs.