This version of Blackburn’s USB Click Light is still one the best selling rechargeable lights of all time. When launched, this light was the best FL-1 certified lumen per gram and lumen per cc bike light available. Blackburn wanted to squeeze in the most performance in the tiniest footprint, without sacrificing water resistance and durability. Careful refinement of the living hinge power button allowed for a more robust and simpler construction. Multiple variants were created in CAD and 3D printing was used to field test mounting ideas and form factors.