The Lumina Boost series headlights are high-performance front bike lights designed for cyclists who demand powerful illumination and versatile functionality. It offers reliable visibility for road trail and urban riding. Its USB-C rechargeable battery travel lock feature and IP64 water/dust resistance make it a durable and convenient companion for any cycling adventure.Note: The NiteRider Lumina Boost is shipped from the factory in Travel Lock Mode. This mode feature is designed to save battery power by preventing the head light from accidentally turning on while in storage. Simply press and hold power button 8-10 seconds to lock / unlockWarning - hot surfaces. Do not use the Lumina as a hand-held lighting device when in high and boost modes