All-carbon fiber frame, weighing only 15.8kg, with the battery weighing just 2.7kg. 20AH extra-large capacity lithium battery, allowing a single battery to travel 27.3km; an additional 20AH battery can be added, extending the range to 54.6km. Extended warranty: Controller, motor, and frame: 2 years / Battery: 1 year. The controller features a USB port for charging portable devices. Super comfortable PU soft armrest pads. Original buckle-type safety seatbelt for secure Includes a wheelchair storage bag for protection during travel.