The NuNinci Continuously Variable Transmission (CVT) internally geared hub is a much sought after eBike feature - not only because of the internal gear advantage (change seamlessly at rest and reduce the chances of having a chain fall off) , but also because of it’s unique abilities to eliminate gear steps. So you don't have to think about changing into the right gear, just twist the grip until you reach your preferred rate of pedaling (cadence). Nuvinci is popular configured with low maintenance belt drive for quiet smooth shifting, a clean drivetrain,
For 2019 expect to see a Nuvinci auto shifter system called “Harmony” that lets the rider decide what cadence they want to pedal at, set it, then let the bike adapt as terrain changes. So with Harmony, in a sense the rider should always be pedaling with the same force at the same speed and the bike will just adapt. Depending on terrain, the rider will end up going faster or slower but pedaling will remain constant.