Ariic New USB Digital Endoscope Microscope 1M Snake Camera 7mm Borescope 6 LEDs NEW with 6 LEDs around the end of the endoscope, so you still can see in a dark environment USB interface,no need install the driver Enough for checking even a small soldering / transistor in a PCB The Endoscope total length is 900mm The diameter of the Endoscope is 7.00mm