electric lithium battery folding bike 1, light weught and small size 2,material: magnesium ... GIRLS AND OLD MEN CAN HOLD IT UP.3, THE BIKE IS MAINLY USE MAGNESIUM ALLOY, ANTI CORROSION, ANTIQUAKE, ... 4,A NEW DESIGN AND PERFECT CRAFTWORK, WHICH BROGHT THE BIKE FASHION APPERANCE.5, LITHIUM BATTERY, 36V 7 -- 10AH. ... PORTABLE, CANE BE PUT INTO TRUNK Magnesium alloy electric Foldable Bike with lithium battery