Main technical parameter: Out size(L*W*H): 550*500*1040mm Seat cushion heigh: 345mm Seat cushion width: 480mm Seat cushion depth: 430mm Backrest height: 520mm Backrest width: 470mm Backrest elevation angle: 41? Front&back sides angle: 65mm Height adjustment: 40-130kg Horizontal adjustment: 75mm Pillow adjustmen: 3lever