This multi-use desktop LED light is ideal for a variety of purposes but is most suited to use with a polariscope or darkfield loupe or gem refractomter. The light is composed of 3 white LED bulbs - this lamp is very bright. Lamp is powered by three AAA batteries. This unit is compatible with our separately listed handheld darkfield loupe with flashlight and handheld polariscope with flashlight. Specifications: High quality LED x 3 Power for flash light : AAA battery x 3 Size: 98mm x 58mm Diameter : 24m 2 years warranty This listing is for the desktop light source only!! In stock, ships in 1 business day. Additional Details ------------------------------ Package quantity: 1