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 Serving the Cycling Community Since 1958                                                                                                         

Alexandria Store : 703-212-2453

Georgetown Store: 202-337-0311

 
 
 
 
 
 
 
Portland Design Works Gravity

Portland Design Works Gravity

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Product Details

Portland Design Works Gravity

Portland Design Works' Gravity Tail Light has a built-in accelerometer that detects deceleration or swerving and automatically changes to a super bright, solid beam to warn following traffic. To allow the accelerometer to calibrate, always install the Gravity on your bike before powering it on. Hold the power button down for 1 second to turn the light on or off. Then, keep your bike still for 1 second after pressing the power button to complete the calibration.

The Gravity Tail Light has a redesigned mount that works with the included seatpost and seatstay brackets.

- Automatic accelerometer brake light function shines 100 lumens bright
- 2 Modes (runtime): Solid - 20 lumens (12 hours), Flash - 80 lumens (30 hours)
- USB rechargeable li-polymer battery
- Weatherproof exterior for all season riding
- Includes brackets for seatpost and seatstay mounting
- Mounts vertically or horizontally
- Includes Micro USB recharging cord
- Weight: 1.9 oz

 
 

Alexandria Location
3240 Duke Street,
Alexandria, VA

Hours:
Mon-Fri 10am-8pm
Sat 10am-6pm
Sun 10am-5pm

Georgetown Location
3403 M Street,
Washington, DC 

Hours:
Mon-Fri 10am-7pm
Sat 10am-6pm
Sun 10am-5pm

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