Stone is a smart, foldable 20” e-bike designed for short trips in the city and for the young generation. With its integrated shaft drive, it is more like an electric car on two wheels than an e-bike. This also helped make the reduced design possible, which conveys exceptional robustness and safety and does not require a chain. The single-sided fork of the frame, which is made of an aluminium alloy without welded seams, additionally ensures a sleek appearance. The e-bike is also equipped with a gyroscope and speed transmitter, which are used for navigation and to regulate the motor power.