electric lithium battery folding bike 1, light weught and small size 2,material: magnesium alloy 3,li-battery 36V ... MAINLY USE MAGNESIUM ALLOY, ANTI CORROSION, ANTIQUAKE, with tenacity.4,A NEW DESIGN AND PERFECT CRAFTWORK, WHICH BROGHT THE BIKE FASHION ... 36V 7 -- 10AH.6,BRUSHLESS MOTOR.7,FOLDABLE AND PORTABLE, CANE BE PUT INTO TRUNK Magnesium alloy electric Foldable Bike with lithium battery