1, one second folding 2, Aluminium Alloy frame 3, Panasonic 1.9Kg li-ion battery 4, 1200 times life battery Sundy brand Folding electric bikeIt is a modern urban folding bike, ideal for commuters who need to travel short distances of 10 to 20 minutes between underground stations, the workplace and the home.It still rolls when folded. It can be carried, rolled or ridden, and with its well-thought- ...