Powerful Power- 750W brushless motor provides powerful performance, easily coping with various road conditions and terrains. Top speed can reach 28 mph. Other top speeds can be freely set. Long-lasting Battery Life - Equipped with a 48V 17AH removable lithium battery, easily removable for charging. The pure electric mode range of 50 miles, and the pedal assist mode range of 65 miles. Foldable Frame - Quick folding makes it easy to carry and store, suitable for commuting; the small size after folding can be easily placed in the trunk of a car, suitable for self-driving trips. Shimano 27-speed and Shimano Hydraulic Brake - multiple gear ratio options allow you to find the right riding rhythm when shifting gears on different terrains and road conditions, improving riding efficiency. Hydraulic brakes are a safer, more reliable braking system that can precisely control speed and braking. 2-year warranty - free replacement of parts damaged by non-human factors and bear repair costs.