Compact, durable cycling light with a machined aluminum body with builtin cooling fins and cutouts for side visibility\n Single LED design provides an impressive maximum output of 500 lumens and eight output modes, including a Daytime Flash mode\n Offering up to 20 hours of total runtime, charging is simple with an integrated cablefree USB stick, and the light straps securely to various handlebar shapes and sizes\n Rear Light: Compact, aero seatpostcompatible rear bike light providing up to 150 lumens and six output modes\n Up to 20 hours of max runtime and a highly disruptive Daytime Flash mode \n WideAngle Optics lens design provides 270° of visibility. Durable, rigorously tested to IPX7 Waterproofing standards. An integrated USB stick allows convenient cablefree recharging