A special mouse for the entire hand.
Comfort: Low muscle tension due to relaxed position of fingers and wrist.
Four right-handed versions: Distance from wrist to tip of ring finger: up to 150 mm: Extra Small, 150-170 mm: Small, 170 - 190 mm: Medium and 190 -210 mm: Large.
Three left-handed versions: Distance from wrist to tip of ring finger: up to 170 mm: Small, 170 - 190 mm: Medium and 190 -210 mm: Large.
Ergonomics: This mouse fits like a glove.
Technology: BlueRay sensor for high precision.
FYI: Also available as a wireless version.
Unnatural postures are a risk factor for the development of wrist and forearm problems (cf. Karlqvist 1994 cf. Jensen 1998 cf. Hagberg 1994). Placing the mouse closer to the body puts less strain on the neck and shoulders (cf. Armstrom 1995 cf. Cook 1998). The 3M Anir mouse looks like a joystick, but works just like any other mouse and increases productivity when working on the computer.
With the special mouse, the wrist is bent less to the side and the forearm is rotated less inwards (Schmid et al., 2015). This results in less muscle activity in the forearm than when using a standard mouse (Quemelo & Vieira, 2013).