The Shimano 7-speed 48V10AH 350W BK6 is perfect for urban and recreational biking. It is made of a lightweight, durable aluminum alloy, with a suspension front fork for a comfortable ride. With a 48V/350W motor, a 48V10AH battery, and SHIMANO 7-speed system, you can travel up to 35km/h and up to 40km per charge. Disc brakes and 20"*3.0 tires offer reliable stopping power, while a LCD display and cable connection provide control. Charging time is 4-5H and the product size is 168*123*60CM.