500W POWERFUL AND STABLE MOTOR : 27.5'' electric mountain bike is equipped with a 500W powerful motor, which provides enough power, max speed is up to 21.6mph. It can meet your daily cycling and allow you to reach your destination easily and quickly. Tip: E-bike has passed SGS Certified to UL 2849. SUSPENSION FORK AND BRAKES: This Electric bike adopts lockable suspension fork and high-quality dual disc brake system. When you ride on the steep roads, it will provide you a stable and comfortable riding experience. Notes: We have 2 tire suppliers, CST and ChaoYang. LAREGE CAPACITY REMOVABLE BATTERY: Equipped with a 48V/499.2Wh removable IPX5 waterproof lithium-ion battery, the electric bike for adults can be fully charged in about 5 hours. NOTE: Please make sure the ebike charger is unplugged and the battery button on the top of the battery is turned on when you want to start the ebike or check the battery level. HIGH-QUALITY ACCESSORIES: Aluminum suspension fork is durable and lightweight. LED headlight provides safety for your night ride. You can get speed, battery power, total mileage, and power assist level on LCD display. 21-speed transmission system makes your ride more flexible. THREE RIDING MODES: Electric bicycle & assisted bicycle & normal bicycle. The combination of three modes is a better choice, greatly increasing the riding range. It can meet your daily cycling and short trips. SATISFACTION GUARANTEED: 85% pre-assembled bicycles. Installation video is attached to our product page. Be confident to ride this electric mountain bike, we will provide 1 year warranty. if you have any problems about this electric bike, please feel free to contact us.