The additional features that make it different are that most of the office chairs have wheels under them that are use to move the chair easily from one place to another as there can be little movements in the working area. Other then the wheels it has a lever that allows it to be settled according to the need this settlement is about the height of the chair. It is very useful as there are people with different heights and they might need to have a chair with different height so it is easily adjustable by using the lever. This height adjustment factor can be used in many different ways like it can be used for tall counters or low counters in the working area. It also allows the rotation of the person in a full round. This is very useful for the mobility of the user to interact with others very quickly and without too much movement. This is also a major factor that has made the office chairs very important in working environments. In this way the complete body gets rotated to the required direction and then comes back to its original posture and no additional energy is wasted in doing so.
While sitting on an office chair the sitting person does not get tired as they could if they were sitting on a simple chair. The angle of the chair that is made by the combination of the upper and lower part of the chair is very accurate according to the human body so it also helps to support the human body for long hours and keeps the sitting person fresh. There are different categories in office chairs like there are very luxurious office chairs that might also be very costly and are used in very high valued environments while there are also regular office chairs that are very inexpensive and are also appropriate for office environment. The essential functionality is present in every type office chair that is important. It depends what type of chair you want for yourself or the environment you want to put it into.