Breezer Infinity with NuVinci N360 CVP Drivetrain. NuVinci drivetrain provides universal gear ratio without need for specific "speed" gears. NuVinci is the internally geared hub released a years ago, NuVinci calls it a transmission, that utilizes “a set of rotating and tilting balls positioned between the input and output components of a transmission that tilt to vary the speed of the transmission.” See article:https://electricbikereport.com/nuvinci-something-new-for-bi...