Equipped with powerful 500watt rear hub motor, powered by 48v 10.5ah samsung lion batteries -with 20-inch 4.25″ fat tires, 7-speed gearing, and quick-release levers for fast size adjustments after unfolding. the aluminum frame electrical bike weights only 50 lbs. Easily folds down to compact sizes as 35″ x 19″ x 28″ for space saving or putting in to the car. Features shimano 7 speed mechanical shifting gear and 5 levels of riding assistant system. heavy duty frame system is good for rider weights up to 300lbs and 6'5″ in height. suitable for daily urban commute riding, conjunction with multiple destinations , seamless transport between cars, bus, boats, and even air planes. fold easily into much small size and store it under your working desk or your condo closet spaces.