Portland Design Works

Gravity+ Tail Light

The Portland Design Works Gravity+ Tail Light takes visibility and safety to the next level with smart technology that reacts when you do. Built around an integrated accelerometer, this light automatically brightens into a powerful 100-lumen brake light when it senses deceleration—alerting traffic behind you that you’re stopping. Whether you're commuting through city streets or descending a dark country road, the Gravity+ makes sure you’re clearly seen from every angle.

Its improved battery life and USB-C rechargeable design keep things simple—charge it up, clip it on, and ride. Two lighting modes let you tailor brightness and runtime to your ride: 12 hours in steady mode or a remarkable 30 hours in flash mode. Mounting options for both seatpost and seatstay make it easy to dial in the perfect setup.

Key Features:

• Smart brake light function uses an accelerometer to boost brightness when slowing or stopping.
• 100-lumen output provides standout visibility in any conditions.
• Two modes: Solid (20 lumens, up to 12 hours) and Flash (80 lumens, up to 30 hours).
• USB-C rechargeable Li-polymer battery for convenient, fast charging.
• Flexible mounting options with included seatpost and seatstay brackets.

Strong, smart, and brilliantly visible, the PDW Gravity+ Tail Light gives riders the confidence to stay out longer and ride safer, day or night.