M1 dhc electric golf trolley graphitenew for 2017 the m1 pro dhc adds downhill speed control and an easy to use electronic parking brake to the features available on the pioneering compact folding m1 pro modelstandout features include an integrated accessory station adjustable distance control up to 45m a patented usb charging port quick access device cradle and compatibility with the easilocktrade bag to trolley connection systemfeaturesdownhill control automaticelectronic parking