M4 Walk behind floor scrubber's clean efficency is 3300㎡/hour, with 24V100Ah battery power supply.The brush tray is 600mm,suction absorbien width is 820mm.It is sustained 2.5-4hours working time.The capacity of the clean water tank is 55L and the capacity of the sewage tank is 65L,which is suitable for shopping malls,supermarket, packing lot, factories, playground etc.