Compact, aero seatpost-compatible rear bike light providing up to 150 lumens and 6 output modes6 modes include Daytime Flash mode for visibility even on bright sunny daysDurable construction has been rigorously tested to IPX7 waterproofing standardsWide-Angle Optics lens design to provide 270° of visibilityIntegrated USB stick allows convenient cable-free rechargingUp to 20 hours of runtime when using Femto modeBlack6RearSeatpostUSB150UPC/EAN/GTIN: 4710582551642