Portland Design Works Gravity Plus Tail Light
Best smart safety light for urban commuters and daily cyclists.
A smart rear light that uses an accelerometer to detect braking and automatically boost brightness. It offers a reliable, weatherproof solution for commuters who need extra visibility in traffic.
$40.00
at
Ridepdw
Who it's for
- Commuters navigating heavy traffic who want increased visibility during stops
- Cyclists with multiple bikes or non-standard frame geometries
- Daily riders seeking a streamlined, hassle-free pre-ride routine
Who should skip it
- Tech-forward users who prefer a single cable for all electronics
- Road cyclists frequently riding on poorly maintained or gravel surfaces
- All-weather commuters riding in freezing temperatures with heavy gear
Performance breakdown
Brake detection accuracy
Accelerometer triggers reliably during deceleration to keep you safe in traffic.
Mounting versatility
Flexible hardware adapts easily to seatposts, bags, or vertical orientations.
Battery efficiency
Solid runtime performance ensures you aren't constantly tethered to a charger.
Weather resilience
Robust construction handles heavy rain and road spray without skipping beats.
Visibility output
Peak 100-lumen burst provides essential punch for daytime and night safety.
Charging convenience
USB-C standard makes topping off power quick and universally compatible.
Key Specs
Mounting Type
Seatpost, backpack clip
Power Source
USB-C rechargeable Li-polymer battery
Brightness
100 lumens (peak)
Water Resistance Rating
Weatherproof
Light Modes
Solid (20 lumens, 12 hours), Flash (80 lumens, 30 hours)
Material
Not specified
Weight
1.9 ounces
Rechargeable
Yes
Charging Method
USB-C
Intended Use
Cycling, commuting
Know before you buy
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Ask Metto anything about the Portland Design Works Gravity Plus Tail Light before you decide.
