The kalkhoff pro connect b9 diamant electric bike 2017 lives up to its german reuption for performance with a powerful bosch performance line e bike drive system at the heart the quite powerful motor features an integrated high capacity battery that offers up to 150km of range features a bosch purion lcd display this compact unit is a combination of remote control and display providing key information through a small easy to read display kalkhoff pro connect b9 diamant 2017 feature