Lightweight and easily hideable in the palm of your hand, the columbo keychain is the perfect keychain accessory. this 100 lumen flashlight features a swivel function for easily activated with one hand and a keychain hook for convenient carrying. 3 lighting modes. on (100 lumens): 1 hour / 40 meters. design. keychain clip. aeronautical quality aluminum. water resistant (ipx7) and shock resistant operation. rotate to activate accessories. 1 alkaline aaa battery. works with 1 aaa alkaline battery