Topeak combo race light set super compact and powerful light set ideal for commuting whitelite race front light the rubber strap provides tool free mountingremoval 2 functions constant or flashing battery included 2 x cr2032 dimensions 7 x 38 x 36 cm weight 354g redlite race rear light the rubber strap provides tool free mountingremoval 2 functions constant or flashing battery included 2 x cr2032 dimensions 7 x 38 x 36 cm weight 376g