Lighting where you need it, when you need it. Storage box holds 1" capacity, and features a strong low profile clip. Removable light bridge stores safely away for easy mobility, and snaps into brackets for secure hold; takes 16 lb. of pressure to detach the light bridge. Light bridge includes 4 LEDs (Light Emitting Diode) that illuminate entire surface. Illuminated writing surface is perfect for poorly lit areas. Requires 4 "AAA" batteries (included). Holds letter size sheets. Dimensions: 14-1/2" L x 9-1/4" W x 1-3/4" D.