The Lumina Pro 1550 features NiteRider's NiteLink Wireless Technology riders can now pair and power ON / OFF taillights (Omega 330 EVO sold separately) with the same compatible technology with NiteRider's NiteLink Wireless Remote Control (sold separately). Unleashing Boost and its varying modes-showcasing an unrivaled widespread beam pattern. Also features color-coded light modes shown through the dual button power switch. Additional features include an 8-Step Fuel Gauge and a highly durable light housing with Fiberglass reinforced nylon meeting all required FL1 Standards for impact testing and dust/water resistance.The NiteRider Lumina Pro 1550 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