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StVZO (for German road standard) approved taillight. Over 220 degree wide beam. Fits with both aero-dynamic and round seatpost!

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GUEE Aero-XK is German StVZO approved taillight. Super bright LEDs, rechargeable, fits with all type of seat-post. 220 degree wide beam for great visibility. 2 hours quick charge with over 5 hours run time.


  • 220 degree wide beam for visibility to the rear, left & right sides.
  • Fits with both aero-dynamic (e.g. Venge, Propel, S5) and round seat posts.
  • Compact & tool-free mounting system.


• Modes: Constant only
• Battery: Li-Poly rechargeable (500 mAh)
• Charge: Micro USB supply 5V
• Charge time (approx): 2 hours
• Run time(approx for manual mode): 5 hours   
• Mount size: 
  Round tube (27.2mm - 35mm ) and any aero tube with outer diameter under 14cm

What is in the box

  • Aero-XK LED Bike Rear Light *1
  • Silicone Band *2
  • USB Charge Cord *1
  • User manual *1 

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