... pollution,Light weight,high quality 3.Gained CE,EN15194 certificate Electric system: MotorHigh speed brushless, from 8FUN. -180W-500WBattery36V ... / 10 Ah -16AH Li-ion ,Lion-polymer. - with electric protection circuit.PAS1:1 pedal assistant system . Speed sensor. - ... alloy, cut-off when braking.TiresKENDA brand, 700x45RimDouble wall aluminum alloy.ChainRust resistent chain.DerailleurSHIMANO NEXUS inner ...