great bike for the money. i was confused when i saw reviews calling it a vivi bike, but when i unpacked mine it says vivi on it not gocio. was glad my husband is handy, as instructions for assembly are minimal and i would have had trouble on my own. the bike is very heavy and seems well made and is easy to get on with the step thru design as i'm older now and don't like having to throw my leg over the seat any more. it's geared a little fast in pedal assist. when i bike with others it gets going too fast so i have to pedal twice then stop to coast then repeat constantly in order to stay back with other bikers. it's best on level or small gradual hills, struggles on steep hills. goes a long time on single charge, i'm a heavier rider and went 25 to 30 miles on a single charge, mostly on pedal assist but 5 /- miles of that on turbo. biggest complaint is my seat does not stay tight. if i hit a bump it will flip back on me, and then becomes loose and rocks on me which is difficult to ride. i've learned to carry my tools with me so i can tighten it occasionally. i wish it came with a small tool holder and odometer on the bike as i haven't found the ideal tool holder yet. i have purchased a nice odometer/speedometer that i added, so those are minor things and easily added later. i would recommend this bike.