Our hoverboards are certified with the highest safety standards, including UL2272 for the hoverboard and MSDS/UN38.3 and UL2271 for the battery. The shell is designed with high-temperature resistance, fire retardance, and strength. It also features a new music stereo speaker and RGB LED lights for a colorful riding experience. The LED lights change color and twinkle with the rhythm of the music. With a cruising speed of 12 km/h and a long distance capability, our hoverboards are perfect for riders up to 165lbs. They are also lightweight and easy to carry. We offer a 12-month warranty and 100% satisfaction guarantee. Contact us for any issues or concerns.