... ,EN15194,RoHS, MSDS, UN38. 24 speed 26" wheel mountain electric bicycle Hot Sale500pcs in StockModel: Z3SpecificationsFoldable designOverall dimension: 1760*660 ... pedal assist modes of electric powerDerailleur: SHIMANO 3*7 speed freewheel derailleur, SHIMANO shifterBrakes: alloy levers, disk brake, ... service team;3,OEM projects are welcomed 4,Brand new Li-polymer battery, high safety and long service ...