Bright LED light, Pull on/off switch, Metal carabineer clip key chain, Powered by 3 LR44 button cell batteries, inserted. Complies with Prop 65. 2.125" L x 0.5" W x 0.875" H. Price includes a Laser Engraved Logo. Imprint area is 1.0" W x 0.25" H on Either Side. Call for multi-colour or multi-location imprints or for rush delivery availability.