If one of the product don't working, you can contact us by store's page and replace a new one for free. It is possible that the product in transit cause the problem. This is a normal situation,and rarely happens.Never mind, We have slove the problem, You will receive the perfect products a great bath toy as your special gift for 1 2 3 year old Infant nephew. Each floating rubber tub toys are about 2.4 inches Package including 6 different style bath toys, Batteries are included and installed. Battery life normally over 3 months and up. (depending on use) When finished using this product, please dry it in time to prevent bacterial growth. Glowing bath toys can decorate bathrooms, as party gifts, carnival prizes, Easter baskets and more. Also as a learning educational toy to cultivate children's imagination.