Coast LED Lenser LL7839 V Squared Nano White LED Keychain Flashlight w PTT Circuit LL7839V Squared Nano Tac TorchKeychain flashlight,White LED Crystal reflector tube system,13.1 mW bright LED Light output High Quality Nichia LED, IntenseWhite Beam 2.9 inch body length,1.6 ounces with Keyring Uses 4x AG13batteries included, run time100 hours