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
Tuesday, Oct 6 2020 (about 2 years ago)
Portland Design Works Gravity Plus Tail Light (Black)
Adequate tail light in flashing mode. Good "be seen" tail light. But top notch brake light function. Wireless, nothing to corrode. Very good for heavy traffic situations with cars. Got to be careful about tilting bike when parking . Brake light comes on unexpectedly. Flashing green light indicates time to recharge. Seems to be rain resistant when mounted under seat.
Rated 5 stars.