Main technical parameter: Out size(L*W*H): 550*500*1170mm Seat cushion heigh: 375mm Seat cushion width: 485mm Seat cushion depth: 430mm Backrest height: 630mm Backrest width: 485mm Backrest elevation angle: 41? Front&back sides angle: 65mm Height adjustment: 40-130kg Horizontal adjustment: 80mm Pillow adjustmen: 3lever