Riding in traffic feels safer when drivers know your next move. The Smart Signal Rear Light gives your Dynamo X a brake light that activates automatically when you actuate the brake lever, plus left and right turn signals you trigger from the handlebar remote so you can signal a lane change or turn without taking a hand off the bars. It replaces your stock rear light using the existing mount and set up only takes a few simple steps. *Turn signal use should be checked against local traffic laws, which vary by location.