electric lithium battery folding bike 1, light weught and small size ... OLD MEN CAN HOLD IT UP.3, THE BIKE IS MAINLY USE MAGNESIUM ALLOY, ANTI CORROSION, ... BROGHT THE BIKE FASHION APPERANCE.5, LITHIUM BATTERY, 36V 7 -- 10AH.6,BRUSHLESS MOTOR.7,FOLDABLE AND PORTABLE ... , CANE BE PUT INTO TRUNK Magnesium alloy electric Foldable Bike with lithium battery