L*W*H(mm) 2100*1450*1250 Turning radius (maximum / minimum) m 3/1 Weight(with/without battery cell) 540/400 Roller Diameter(mm) 280 Side Brush Diameter(mm) 460 Maximum Working Efficiency(M2/H) 10800 Cleaning Width(mm) 1450 Dust Box Volume(L) 100 Battery Cell(pcs) 4 Voltage(V) 48 Capacity(AH) 85,100,150 Charging Interval After Totally Discharging (H) 8 Working Hours When Fully Charging (H) 5,8,10 Environment Temperature(?? -20-50 Noise(db) 62 Total power (W) 2800