This chair has a medium-backrest and has two levers. One for height adjustment and for back adjustment. The seat has a fixed angle.
Backrest Height: 360mm
Seat Depth: 480mm
Seat Width: 470mm
Spectrum 3 Chair Height Adjustable Arms - Black
The Arena 3.50 Large seat comes with a 520mm x 520mm seat and Height Adjustable Armrests