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The Topeak TailLux 25 USB design features convenient cable-free charging with a direct USB port plug. Two super bright LEDs provide 25 lumens and three light modes, so you can be seen up to 2km away – even on the darkest nights. Bi-directional tool-free mounting and removal is accomplished by a single silicone strap making it simple to use on seatposts, seatstays or Topeak bags. (with included bag clip)

• The Topeak TailLux 25 USB design features convenient cable-free charging with a direct USB port plug. Two super bright LEDs provide 25 lumens and three light modes, so you can be seen up to 2km away – even on the darkest nights. Bi-directional tool-free mounting and removal is accomplished by a single silicone strap making it simple to use on seatposts, seatstays or Topeak bags. (with included bag clip)
• Fits aero or round seatposts (25.4 – 34.9mm), seatstay, and Topeak bags
• Engineering grade polymer body
• IPX 6 Waterproof
• 3 Modes