Musical Crab Toy: Our baby crab features a built-in infrared sensor that allows it to detect obstacles and move around. The lights and music make it very attractive to children. Easy to Use: One-button control; simply turn on the switch and give it to your little ones. The smart crab emits dynamic music as it moves. This is helpful in developing children's motor skills and hand-eye coordination while having fun. Rechargeable Battery: This electronic crab toy has a built-in rechargeable lithium battery; a 2-hour charging time lasts for up to 20-30 minutes of non-stop operation. It comes with a USB charging cable. Simply insert the cable into the crab and the USB port on your computer or charging block. Make sure the toy is turned off during the charging process. Excellent Quality and Safety: These baby crabs are made of non-toxic ABS plastic, with polished smooth edges, burr-free, and contain no small parts to avoid choking hazards, safe for children. Ensures babies stay safe when touching it on their tummy.