3x 10x MagnificationAdvanced optical glass lens with two different magnifications: 3X 10X, to meet the different requirements of different occasions. Reduce Eye Fatigue38 super bright LED lights to prevent eye fatigue. White light color, no flicker or anti-glare, no flash or radiation. Top shutter design helps protect the lens from dust and damage. Flexible positionAmplifier lamp, flexible metal gooseneck, 360 degree rotatable. You can place light where you need it most. The length of the gooseneck is approximately 36 cm. USB PoweredEquipped with 1.2m USB cable power adapter, simply plug the LED light into power cord/wall adapter/computer. Ideal for unlimited use. Scope of applicationfor reading, printing, machinery, sculpture, gardening, electronics, etc. size Lens diameter: 100mm,(3.93inch) Length of snug tube 360mm,(14.17inch) Color: black Power supply via 1.2m USB cable. Base diameter: 175mm,(6.89inch)