Brushless DC motor 250-750 watts Lithium-ion 400-700 Wh (watt-hours) 40-80 km (25-50 miles) per charge 25-45 km/h (15-28 mph) Aluminum alloy or carbon fiber 18-25 kg (40-55 lbs) 3-6 hours Disc brakes (hydraulic or mechanical) Puncture-resistant, 26"-29" size LED or LCD for speed, battery, and mode Eco, Normal, Sport