My kids wanted to love this product; they were really excited to receive the bicycle lights. Unfortunately, after putting in new Energizer batteries, not all of the lights even light up. On top of that, they are dim. Nothing like the photos. I probably should have returned it, but the kids wanted to put it on a bike anyhow. I would advise looking elsewhere. Great idea, just execution wasn't ideal. Hopefully they can get a summer's use out of the product before it dies completely.