ZVGREEN HB-A Electric BicycleLow Price Good Quality Guarantee![Motor & Battery Power] High Ratio Rear Hub Motor with a 1:13 reduction ratio offers smooth power output. It's 36V 350W, and has built-in gear reduction transmission for quick starts and less battery consumption. Built-in High Capacity Battery has a 45mile max range(Electric-ass..

ZVGREEN HB-A Electric BicycleLow Price Good Quality Guarantee![Motor & Battery Power] High Ratio Rear Hub Motor with a 1:13 reduction ratio offers smooth power output. It's 36V 350W, and has built-in gear reduction transmission for quick starts and less battery consumption. Built-in High Capacity Battery has a 45mile max range(Electric-assist) ..