Brake system : Front V brake Rear:expanding brake Max speed : 25km/h Distance : 55km with pedal assistant Frame : steel Assistant system : 1:1 Motor : 180-250w Brushless motor Battery : 36v 10ah lead-acid battery Imput:110v-220v 50HZ Tyre : 26*1.75 Climbing : 7° Net weight :33KGS Gross weight : 39KGS Derailleur竊�HIMANO 6 speed gears available