Review on Armbands Bracelets Childrens Running Supplies Sports & Fitness by Shalom Germann

Bought this as a gift and was going to send it back thinking it wouldn't work. Just before returning, I completely removed the small battery and finally found the tab that protects the battery. Once removed they work great. I don't know how long they will last but they are working well so far. I give 4 stars because the clear plastic tab was so hard to see and the customer was not told to take out the small battery to find it.