The SureFire Titan Plus is a professional grade flashlight that's small enough to fit on a keychain. Utilizing MaxVision Beam technology, the Titan can produce a 300 lumen beam of light at distances up to 66 meters. Alternatively, the Titan Plus can be set to lower outputs of 75 lumens and 15 lumens, these modes are perfect for situations that don't require high degrees of illumination and will greatly increase the battery life. The durable, nickel-plated brass body ensure the Titan Plus will stand up to the rigors of everyday use, and is even IPX7 waterproof rated. To activate the Titan Plus, simply twist the bezel, twisting the bezel counterclockwise repeatedly will switch between output modes.