The spring loaded buttons of the MoVeS Flex-Ion isolate each digit, so the strong fingers cannot compensate for the weaker ones. This results in a better, faster and easier to control rehab process. MoVeS Flex-Ion is available in 6 colour coded units with gradual resistance. This gradual resistance helps the therapist measure progress. The ergonomic base adds comfort and stability. Comes with a full colour and multilingual instruction manual.