1. YOUR RANGE BOOSTER 48 V 13 Ah Detachable Lithium-lon Battery 2. 3 RIDING MODES 3. FAT TIRES SMOOTH OUT BUMPY PAVEMENT, 20 x 4.0 INCH FAT TIRES With wider tire surface, ENGWE e-bike enables you to ride smoothly on rugged road sand tackle steep hills. 4. FOLDS IN SECONDS Simply fold the frame and handlebar to store this e-bike in a car or take it upstairs for storage. 5. MECHANICAL DISC BRAKE Front and rear mechanical disc brakes are 180-inch in diameter and provide the ultimate stopping power.