TST Electric Bike, 750W E-Mountain Bike, 48V/15AH Battery SGS, 20" Fat Tire Ebike, 28mph Fast Cargo Ebikes, APP Control Recommended Use: Off-road. Age: 16-55 years Bicycle type: Mountain bike. Speed: The top speed is up to 20 mph in pure electric mode and 28 mph in pedal-assist mode. APP Control: Search for "Orbital Sports" in your mobile app store and download it directly. Upgraded Battery: The bike features a 48V/15Ah removable battery, offering a range of up to 80miles on a full charge in pedal assist mode. Durable Rear Seat: The aluminum rear seat has a non-slip, seamless edge design, making it resistant to rain and capable of carrying large items or even passengers, enhancing its functionality for trips with family or friends. High Load Capacity: With a maximum load capacity of 450lbs, the e-bike can handle a wide range of accessories and accommodate heavier riders or additional cargo. Smooth Gear Shifts: The bike comes equipped with 7-speed gears, offering smooth transitions to match your preferred comfort level.