Specification: Motor: UL 1004-1 Certification 1200W (Peak) 750W (Sustained), 48V Brushless Rear Hub Motor. Battery: UL 2271 Certification 48V 15AH (720Wh) Battery. Frame: 6061 Aluminum-alloy. Electric Bike: UL2849 Certified. Controller: 48V 25A Frame-integrated Controller. Charger: UL 1310 Certification 2A Fast Charger, 6-7 Hour Charging Time. . Pedal Assist: 5 Levels, Speed Sensor. Speed: Up To 28 MPH on Throttle. Display: Colorful LCD display. Fork: front suspension fork with lockout. Brake: F & R Mechanical Disc Brakes,160mm Rotors. Tire: 26" X3.0" Chaoyang High-End , Color Tire. Transmission: 7-speed. Throttle: Twist Throttle with Cruise Control. Light: Headlight and Taillight with Turn Signals & Brake Light. 3 Working Modes: Throttle Mode, Pedal Assist Mode (5 Level), Classic Bike Mode. Max. Load: 330lbs.