5 Bright!MattD1983 | 24/06/2013 | See all MattD1983's reviews (11)Top 100 Health & Beauty Reviewer really happy with these little lights. the elasticated strap which holds them on is really secure so they dont slide or move on the handle bars. this also makes them really easy to put on and take off. there are 3 settings, constant, flashing (fast) and flashing (slow). great product!