I keep an ultrafire c2 in my briefcase and an sl keymate on my keychain, so when im driving i'll at least have the keymate, but the light that never leaves the car is a spotlight with a built-in toolkit (hammer, pliers, screwdrivers, hex wrenches). it's got a flashmode, siren, and radio. also, it's powered strictly off the 12v cigarette lighter adapter...no batteries to leak or explode...pretty awesome for a gift from a christmas party...