Ergonomic mouse with sleek design and luxurious look. Design: its black colour gives the PRF Mouse a sleek design and luxurious look. Wireless: the mouse has a wireless range of up to 20 metres. Buttons: 4 conveniently placed buttons + clickable scroll wheel Ergonomic: vertical grip improves arm and wrist position. Simple: it is easy to adjust the speed of the cursor to the desired speed. Unique: you grow accustomed to this mouse very quickly. Convenient: you can simply store the USB receiver inside the mouse to make sure it will not get lost. Unnatural posture is one of the causes of hand, wrist and lower arm injuries (Karlqvist 1994, Jensen 1998, Hagberg 1994, et al). Positioning the mouse closer to the body puts less strain on the neck and shoulders (Armstrom 1995, Cook 1998). Use of a track ball and touch pad lowers productivity, standard mice and pen tablets score high in terms of productivity. The ‘handshake’ grip of a vertical mouse ensures the wrist and