16″ New European Standard Certification, UL Certification ,16″*1.75-1.95, Electric Bicycle, Sturmey archer inner 5 speed, home run method derailleur system, new digital display thumb shifter. The powerful lithium ion battery (350 W) is easily accessible and hidden within the aluminum frame, it’s Lightweight and easy to handle, perfectly designed for modern living. You can conveniently carry onto a train or bus, place in the boot of a car and even store under your desk at work. Don’t put off buying an electric folding bike any longer.