UTL-15 Cosmo 15 (15 Lumens)


SKU: UTL-15 / 713835033074

Quick Overview

The UTL-15 is a great everyday tail light

15 Lumen High and Flash

Cosmo 15 User Manual

2968 in stock (can be backordered)



Limited Lifetime Warranty
Serfas® warrants to the original purchaser that the product is free of defects in material, construction, and/or workmanship for the lifetime of the product.

Battery Warranty – One Year Coverage
Serfas® batteries are covered by a 1 year warranty from the original date of purchase.


  • 3 LED Design for Easy Visibility
  • Triple 5 Lumen LEDs
  • IPX3 Waterproof
  • Charges from Dead to Fully Charge in 2 hours
  • Last Mode Memory
  • USB Charging
  • Solid Modes:
    • High (15 Lumens): 2 hrs
    • Low (7 Lumens): 4.5 hrs
  • Flash Modes:
    • KITT Flash (5 Lumens): 14.5 hrs
    • Flash (15 Lumens): 4 hrs
  • Weight: 56 Grams with Bracket
  • Battery: Lithium Polymer

Cosmo 15 User Manual

1 review for UTL-15 Cosmo 15 (15 Lumens)

  1. Tigger

    I bought one about 9 monthes ago. I am very happy with this light, that my wife wants one for herself. and that means alot to me. You will be seen DAY and night time when this is on your bike

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