Enjoy a longer ride time with the Razor Power Core E100 and its innovative . in-wheel hub motor. Lighter and more efficient . the maintenance-free Power Core technology delivers 50% more ride time than the Razor E100?Cup to 60 minutes of continuous use. Kick to start the high-torque hub motor and twist the throttle to feel the maxed-up power of the 100-watt motor at speeds up to 11mph(18 km/h). The Power Core E100 features an aluminum deck and all-steel frame and fork for maximum durability . while the pneumatic front tire and airless . flat-free rear tire deliver a smooth ride with increased traction. The combination of power and efficiency makes the Power Core E100 a blast for riders ages 8 and up.