... 1, light weught and small size 2,material: magnesium alloy 3,li-battery 36V, 7/8/9/10 A MATERIAL:magnesium ... MEN CAN HOLD IT UP.3, THE BIKE IS MAINLY USE MAGNESIUM ALLOY, ANTI CORROSION, ANTIQUAKE, with tenacity.4,A NEW DESIGN ... .5, LITHIUM BATTERY, 36V 7 -- 10AH.6,BRUSHLESS MOTOR.7,FOLDABLE AND PORTABLE, CANE BE PUT INTO TRUNK Magnesium alloy electric ...