Headlight: Compact, durable cycling light with a machined aluminum body Features built in cooling fins and cutouts for side visibility Single LED design provides up to an impressive 500 lumens of output and eight output modes-including a Daytime Flash mode Runtime has increased by 2.5 hours for up to 20 hours Charging is simple with an integrated cable-free USB stick Securely straps to a variety of handle bar shapes and sizes Max Lumens: 500 Recharge Time: 2.3hrs Weight: 84g. Tail Light: Max 40 lumens / 16-hour runtime in Femto mode Daytime Flash mode Wide Angle Optics: 270Adeg of visibility Aero and round seatpost compatible design IPX7 Waterproofing standards Integrated USB stick for cable-free recharging 400 mAh battery capacity Position: Rear Light Type: LED Bracket: Silicone Strap Rechargeable: Yes Dimensions: 60 x 41 x 64mm Weight: 45g. Color: Black