This lamp uses 72 high intensity LED's to provide a full spectrum reading, working or background light source. Used in the treatment of SAD (seasonal affective disorder), full spectrum lighting provides a more natural light to conventional yellow tungsten bulbs and harsh fluorescent bulbs. Dimmer function. Black. Size (H)19, (W)10.5, (D)4cm. Weight 0.2kg. Manufacturer's 2 year guarantee.