Rubbee X makes every bike electric. It has batteries, electronics and a motor that touches the bike’s rear tyre. It also has a wireless cadence sensor that tracks your pedalling pattern and adapts the electric assist automatically. Its patented quick-release lock technology enables Rubbee to be installed and detached with one hand, in just one second. The modular battery system gives the user a choice of riding types, from eco to power, while a mobile app helps you to find your way round the city as well as check the Rubbee’s settings.