We tried many of these for teething and little one ended up liking this one the most. She likes to chew on it cold so we keep it in the fridge. Always check every piece to ensure nothing is about come of the toy. Good product.Fantastic!! My 10 mo old granddaughter loves it!!Needs to be charged often. Only stays on for about 15 minutes at a timeWorked great for 4 month old holding their head up during tummy time. He followed it everywhere it went! The crab gets stuck occasionally under furniture but overall worked well.Everyone Loves this Crab - so coolI think we got a dud of the bunch, only does this one sound and only one eye lights up and doesnt sing or do anythingOnly one sensor works so it gets stuck when it goes to the left. The right side sensor works perfectly. My grandson loves it but we have to go unblock it when it gets stuck to the left.