Product Review

FEATURES of the Serfas Thunder Blast 100 Lumens Headlight Blast audible warning system alerts rider of low battery Includes extra long straps that will fit almost any post, handlebar or mounting application on a bike Solid Modes: Hight(100 Lumens)2hrs, Low(20 Lumens)7.75hrs Flash Modes: High(100 Lumens)3.5hrs, Low(20 Lumens)14.5hrs Weight: 48g without bracket Battery: USB rechargeable Li-Polymer