The Zipper Z2 electric bike is great for commuters and easily folds up for practical storage and transportation. When unfolded the frame locks in place with a patented safety lock keeping the frame rigid and in place. The Z2 can go 15.5 mph unassisted which is the maximum allowed for an electric bike to be road legal without a license or tax. Just select how much help you want from the electric system using the easy selector switch, start pedalling and the motor will assist. This new upgraded version has a bigger 9AH battery and new water resistant wiring. The lithium battery is secured in place with a padlock, and can be quickly removed to allow charging anywhere. Other features include walk assist with finger throttle, digital control panel, kick stand, rear wheel lock, battery life indicator, bright front and rear LED lights and rust resistant chain.