The M400 Midwheeler is similar to previous models because it boasts a sleek design and top quality. This chair features a turning radius of only 500 mm so it can be easily used in smaller spaces. The chair will run up to 12 km / h if you have a desire to go fast. It features components that will protect vulnerable surfaces. It is user friendly and does not requier use of any special tools. These features should make sure that you can easily maintain your chair. This chair turns evolutionary into revolutionary.