Easy to use Series Magnifier lamp,Lens material: glass Lens size:6 " Diopter: 3 diopter/5 diopter Power supply: 110V-120V / 220V-240V /100V Light source:T5 28W fluorescent energy-saving bulb Supplied with electronic ballast Standard mount: table bracket Colour available: white, black, etc. Clamp,desktop base or floor stand can be selected ESD safety available by request