Electric City Bicycle Driving Mode: Electric Pedal with Assistance Weight: 28KG(battery included) Frame: Aluminum Rim: Aluminum Double wall rim Tyre:28 / 26 inch Motor: 200W/24V, rear wheel driving Battery: 24V 9AH/13AH NiMH/Li-ion Continuous Distance: 30~45KM Charger: 220V/1.8A Brakes: F/R Disc brake / Drum brake Derailleurs: Shimano gear,6 speed