Power Type: Lead-acid or Lithium Battery (Not Included). Material: Aluminum, Iron, Copper, Magnet Steel. Motor Type: Brushless Gear Series Hub Motor. Motor Net Weight: 3-3.5kg/6.6-7.7lbs.
Your speed, session and total distance, and battery power are all available at the push of a button. These bike accessories are preset to follow public speed limits but can also automatically shift from 11.5 to 26, 38.5, 51, or 63.5 km/h.