The XRT Mini MAG is a great choice for a child transitioning from push bike to electric or taking there first ride on a bike. This bike was specifically programmed with the little ones in mind. Safety features like Soft start (bike takes 2.5 seconds to ramp up to the selected speed), Kick start (child must push/kick the bike before the motor engages), 50% mode, Dual brake system are some of the features we built into the bike. The Magnesium frame for enhanced durability and lightweight construction. This little bike is packed with the same awesome features of it's larger brothers without the large price tag. Features like like Dual brake system (Electric and Disc), 6 speeds, 2 modes, Kick-start, quick swap batteries, 2A quick charger, 19mm handle bars with mini grips (23mm outside diameter), powerful 250W motor with 12A controller making it suitable for climbing small hills, riding in the yard or at the park. With its compact size and advanced features, the 12" XRT Mini Mag is the perfect kids balance bike at an affordable price. Specifications 12" Wheel Size 21V-2.5Ah Quick Swap Battery 250 Watt Brushless Hub Motor Dual Brake System (Electric and Disc) Kick Start Mode 2 Power Modes/6 Speed Settings 12 Amp Controller with 6 Mosfet Transistors Magnesium Frame Kick Stand 19mm Handle Bars Mini Grips