LRI PRK Photon II LED Keychain Micro-Light, Red Beam Go to amazon.com Related posts Where to find keychain light bulb? FeatureMulti-function on/off switchReplaceable Lithium batteryUnbreakable high intensity LEDQuick release ring24K gold-plated contacts DescriptionATTRIBUTESBatteries Included:YesBulb:LED RedFinish:BlackMaterial:PolyurethanePower Source:1 x CR2032Switch:Pressure Switch