| standard | optional | |||||
| Headrest | 2D headrest | 3D headrest; no headrest | ||||
| Backrest | PA+GF back frame with nylon mesh + aluminium backrest frame + height adjustable backrest | |||||
| Armrest | 4D PU armrest + nylon armrest frame | 6D armrest | ||||
| Seat | full nylon mesh with seat sliding | molded foam cushion + nylon seatcover | ||||
| Mechanism | four-position locking wire-control mechanism | three-position locking mechanism ;
Italian DONATI wire-control stepless locking mechanism |
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| Gaslift | Class 4 black gaslift | |||||
| Base | 350mm nylon base | 350mm aluminium base | ||||
| Casters | 60/25 black PA casters | |||||
