Refurbished Lumina™ Max 2500 Front Bike Light with NiteLink™Note: The NiteRider Refurbished Lumina Max 2500 Boost is shipped from the factory in 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 unlock. FEATURES MAX Lumen Output: 2500 on Boost Mode. MAX power requires MAX energy, use only when you need it most VerifiR NFC Technology Lumen Output: 1800 on High 8 Modes