LOCK MODE FEATURE keeps the Swift 300 headlight securely powered off during transport or storage. Unlock / Lock the light by simply holding the power button down for 8-10 seconds. IMPORTANT to note that NiteRider uses this key feature after assembly and production to prepare for transport. The light is set to Lock Mode at the factory, unlock before use. OPTIMAL VIZ for increased visibility while out on the roadways. Cars and motorcycles are incorporating daytime running lights for increased daylight visibility. And with drivers more distracted than ever, we think cyclists should as well SWIFT 300 COLLIMATOR LENS WITH SIDE LIGHTING increases your visibility while out on the roadways. The custom lens projects a smooth and wide beam pattern to light your path along busy city streets and dimly lit bike paths. SWIFT FEATURES A SMOOTH 300 LUMEN beam pattern in an ultra compact and lightweight design