GO SAFER - UL 2272 Certified balance board with UL2271 Certified Smart Battery. Underwent and passed 159 tests regarding safety regulations, meaning no potential fire hazards. Recommend at the Age 13+ MORE POWER - EPIKGO has 400W Dual Motors that help it climb slopes as steep as 18 degree and last over 1 hour and over 10mile range on a single charge, making it the most powerful balance board on the market. GO ANYWHERE - Solid rubber tires for all- terrain purposes. Rated IP56 for solidness and water resistance. Easily maneuver through grass, mud and sand on the board built to do more. BIGER & BETTER - EPIKGO is nearly 2x more powerful and 30% larger than the leading competitor meaning more foot space, a more stable ride and more control. Maximum weight limit- 240 pounds. Minimum weight limit- 44 pounds Plus the built-in fast 2 hour fast charging technology, it makes the most sophisticated product of its kind.