FREE SHIPPING ON ORDERS OVER $50View Details
JOIN OUR EMAIL LIST
Sign Up
MON-SAT 8AM-5PM PT
Portland Design Works Gravity 80 USB Tail Light with Auto Brake Light

Portland Design WorksGravity 80 USB Tail Light with Auto Brake Light(Return to Product Page)

Add your own review
(4 customer reviews)
5 stars
4 stars
3 stars
2 stars
1 stars
(3)
(0)
(1)
(0)
(0)
(75%)
(0%)
(25%)
(0%)
(0%)
Reviewed 3/3/2018
by Anonymous
Overall Rating
0 of 1 customers found this review helpful.
Good product

Works well, very bright, good price

Was this review useful to you? Yes/No
Thank you for your feedback.
Reviewed 4/10/2018
by Anonymous
Cycling Enthusiast
Houston, TX
Overall Rating
0 of 1 customers found this review helpful.
Bright but does not last long

The light is sufficiently bright and accelerator works well. Top light lit up when you slow down or brake. But it lasts only around 3 hours, not enough for longer rides.

Was this review useful to you? Yes/No
Thank you for your feedback.
Reviewed 3/29/2018
by Tomahawk
Daily Commuter
SF, CA
Overall Rating
2 of 2 customers found this review helpful.
Excellent idea and it works

I think this light is a great idea and it works so it gets 5 stars - on a purely technical level it can still be improved. I would prefer to use the blinking mode on this light and then when you break it adds the solid light, however the blinking mode is an epileptic techno fit not a nice calm attention grabbing blink like some of the other PDW lights. So I don't use it, instead I have a second blinking light on my pack and I use the Gravity light in the always on mode that gets brighter when braking.

It's easy to use - it remembers what mode you were in - so when turning it on it always goes to the last mode it was in - very good UX design choice.

There are definitely times when it falsely decides i'm braking, usually when going over bumps - I'm actually happy with that since it is better than if missing detection of braking.

For brightness, I think it is the right amount. When lit up in braking mode it is very bright, I actually would not want it to be brighter.

Was this review useful to you? Yes/No
Thank you for your feedback.
Reviewed 3/20/2018
by Rich
Portland, Ore.
Overall Rating
1 of 1 customers found this review helpful.
Great light

Ive used this for a few months. No moisture or usability issues. The blink is sufficiently bright but not too obnoxious to follow. The lense helps disperse the pattern a bit to not blind other cyclists. Seems like it has to be charged about every 15 hours or so. I would buy one again.

The mount has changed from previous PDW tail lights. The old style isnt compatible which was a bummer.

The brake feature works OK. The light switches to a solid pattern pretty regularly on rough stretches of pavements (e.g. chip seal will set it off almost indefinitely). It does reliably detect harder braking.

Was this review useful to you? Yes/No
Thank you for your feedback.

We are committed to delivering outstanding value and service to our customers, every day.
Try us today to see why so many of our customers come back again and again.

*Orders received before 3:00PM Pacific time are shipped the same day (Mon-Sat). Orders over $50 are shipped free (USA only, excluding AK and HI). Some exceptions apply. See Shipping for details.