VEVELINE Hoverboard UL2272 Certified 6.5 inch Self Balancing Hoverboards, Hover Board for Kids w/Bluetooth Speaker SAFETY: 6.5 Inch rubber tires deliver increased durability and ensure smooth rides. All hoverboards have passed strict electrical test and meet UL2272 standards to ensure safety. Consumer's safety is our top priority EASY FOR EVERYONE: The quick learning system and powerful self-balancing feature makes it easier and safer for amateurs and beginners PERFORMANCE: Built-in wireless speaker can be easily connected to portable devices, just enjoy your favorite music or books without wearing headphones SPECIAL DESIGN: Built with LED lights and flash wheels. LED headlights provide you safer ride at night. Our hoverboards offer you such wonderful riding experience BUY WITH CONFIDENCE: 3 Months Warranty. We provides professional services, our goal is your satisfaction. Any problem just don't hesitate to contact us