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