, with 2xCR2032 button batteries as power-supply Adjust the angle arbitrarily, and can rotate 360 degrees The LED glasses clip lamp can clip the leg edge and middle of the glasses of any types 1 high brightness LED as light source, long service life, light beam, novel design Advantages: small size, light weight, good mobility, no matter change the wearers, LED light ray and the direction of line of sight is always the same