Just clip Sapphire to your key ring, your coat, your duffel, purse, or briefcase. Press the Softouch® Switch and a brilliant blue beam gives you luminous light wherever you need it. Ingenious Sapphire Crystal LED lamp lasts for over 100,000 hours of use, yet draws a miniscule amount of current. And you get a full 180° of illumination, not a narrow slice of light. Conveniently clips anywhere, thanks to a coil-spring clip that opens and closes automatically.  Forged aluminum body in a tough resin frame is completely shock, impact, and waterproof. Throw it against a brick wall you can?t destroy it! Two, 3-volt lithium button cells give you a minimum 10-year shelf life under any conditions. So you can store Sapphire Light in your car?s console, or on your boat, and always have the security of a bright Personal Light. And in the unlikely event Sapphire should ever fail, for any reason whatsoever (including dead batteries!), the manufacturer will replace the whole light, free of charge, for your lifetime!