electric lithium battery folding bike 1, light weught and small size 2,material: magnesium alloy ... GIRLS AND OLD MEN CAN HOLD IT UP.3, THE BIKE IS MAINLY USE MAGNESIUM ALLOY, ANTI CORROSION, ANTIQUAKE, with tenacity ... .4,A NEW DESIGN AND PERFECT CRAFTWORK, WHICH BROGHT THE BIKE FASHION APPERANCE.5, LITHIUM BATTERY, 36V 7 -- 10AH.6,BRUSHLESS ... ,FOLDABLE AND PORTABLE, CANE BE PUT INTO TRUNK Solar e-bike