Originally Posted by Sy Reene

Are you sure you mean the Metro? I was referring to the Metro, eg. this Q&A on the Metro 550: Amazon.com: Questions And Answers: The clamp doesn't seem big enough to fit my handlebars... Either of my bikes. Even all the way open it doesn't reach around. what am I doing wrong?

OTOH, I was also looking at the Cygolite Dash which seems to have the rubber band.