Portland Design Works Gravity+ 100 USB Tail Light with Accelerometer, Red
UPC : 812938014468
Share this Product
The 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 your bike still for 1 second after pressing the power button to complete the calibration.