The NiteRider® Lumina™ 1200 Boost provides enough light that it can be used in just about all riding conditions, whether it be on the road, on your favorite mountain biking trail, or hand-held in Walk Mode. Specifically designed to meet the needs of riders in all cycling categories, the Lumina™ 1200 Boost features Boost Mode light setting. With NiteRider's custom engineered optics, the Lumina™ 1200 Boost projects a beam pattern that provides a generous long-distance spot and a wide flood beam pattern of 1200 brilliant lumens! The Solas™ 250 has two powerful LEDs, 4 modes (2 flash/2 steady) and is USB rechargeable. NiteRider has implemented what they call “Group Ride Mode” for cyclists who still want to stay visible and safer but not distract others in the pack.