Portland Design Works Gravity Plus Tail Light (Black) (100 Lumens)

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PDW Gravity Plus Tail Light.


  • Improved model with better battery life
  • Designed with a brake light function, which uses an accelerometer to determine movement, the Gravity illuminates using 100 lumens to let others know you are stopping
  • 2 modes (runtime): Solid - 20 lumens (12 hours), flash - 80 lumens (30 hours)
  • USB rechargeable li-polymer battery
  • Includes brackets for seatpost and seatstay mounting and Micro USB recharging cord

Brightness: 100 Lumens
Battery Type: Rechargeable (Micro USB)
Run Time: 10 - 25 Hours
Beam Color: Red
Color: Black
Weight: 54g

This product was added to our catalog on April 20, 2021

Verified Owner
Sunday, Jun 12 2022 (about a year ago)
Portland Design Works Gravity Plus Tail Light (Black)
A single rainy ride trashed this light. Inner light was half full of water...likely never a good thing around circuit boards, etc. Failed to charge or turn on subsequent to this. Will be reaching out to PDW, but certainly would like to hear from performance as well, especially in light of the many good reviews this light has received.