Magnesium alloy frame, Lithium battery, Shimano gears, 36V/10Ah Lithium Battery, Folding bike ... brakeDerailleur:SHIMANO 6 speed gearsMax speed:25KM/HRange:40KM with speed bar ,≥55KM with pedal assistantLoading capacity:100KGSNet weight:22KG including batteryGross ... including packageCapacity:90PCS/20GP,192PCS/40GP,288PCS/40HQ electric bike with alloy frame foldable and lithium battery