electric lithium battery folding bike 1, light weught and small size 2,material: magnesium alloy ... AND MUCH LIGHTER , EVEN LITTLE GIRLS AND OLD MEN CAN HOLD IT UP.3, THE BIKE IS MAINLY USE MAGNESIUM ALLOY, ANTI ... .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