Fun and Smart Crab Toy: Adopted advanced infrared technology, this crawling crab is super fun for babies to play with - it will crawl in the opposite direction when it encounters an obstacle. This is a super fun interactive baby toy to encourage babies to crawl. NOTE: Do not use this toy on carpet, in water or in a humid environment. USB CHARGING CRAWLING TOYS: Powered by built-in 3.7V lithium battery, 2 hours charging time will last up to 60 minutes of non-stop operation. A USB charge cable comes with the package. Please make sure the toy is turned off during the charging process. STURDY & GREAT QUALITY: This crawling crab is made of high-quality ABS material, which has smooth and burr-free quality. It will not hurt your kid's hand. LONG TIME PLAYING: This moving crab toy is powered by a 3.7V lithium battery, which can last up to 30 minutes when fully charged, including a USB charging cable. Let children enjoy a good playing time! BEST GIFT FOR KIDS:This musical crab will be a perfect Christmas, birthday and Thanksgiving gift for your kids.Your and your kids' satisfaction is always our priority.