Pupular Electric bicycle with EN15194 1) 250W motor 2) Lithium battery,36V/10Ah 3) Alloy frame 4) Japan 6-gear derailleur Popular Electric bicycle with EN15194Motor ... , Shimano, outer 6 or 7 gears,precise and reliable shiftingFrame of electric bicycleAluminum alloyRims of electric bicycleDouble-wall, alloy, Stainless steel spokes, Rust ...