Key Features:Powerful and versatile LED taillight..Light and durable co-molded lens/body construction. Unique aero and round post compatible design. .Five ultrahigh-output LEDs delivering up to 150 lumens. .Mode Memory function returns to selected mode after turning off. Eleven unique modes including two high-visibility Daytime Flash modes. .Enhanced lens with built-in side visibility. .Integrated cable-free recharging USB stick..69g (without strap mount).Blast: 45 lumens, 1h:30min,Enduro: 15 lumens, 4h:30min,Economy: 3 lumens, 18h:00min,Flash 1: 25 lumens, 5h:00min,Flash 2: 15 lumens, 5h:00min,Flash 3: 15 lumens, 5h:00min,Flash 4: 20 lumens, 6h:00min,Flash 5: 5 lumens, 17h:45min,Flash 6: 3 lumens, 30h:30min,Day Flash 1: 150 lumens, 3h:15min,Day Flash 2: 100 lumens, 4h:45min.