It integrates smoothly onto a cyclists seat post, seat stay, rear rack, helmet or even mudguardsThe sleek linear light case is paired with a unique versatile bracket designThe Vulcan is a continuation of tradition and innovationLumen output: up to 100 lumens (front)Lumen output: up to 30 lumens (rear)Li-polymer rechargeable batteryColour : White & Red70 x 32 x 32mmWeight: 30g