The volume of sound on a PC is controlled by rolling the mouse wheel while holding the right mouse button.
This feature works at any computer that has the USB port and with any OS without any additional software or drivers.

Casing material:: Bubinga (Guibourtia tessmanii);
Weight: 130 grams;
Connection: USB port;
Compatibility: Windows, Mac-OS, *nix
Cable length: 0,55 m or 1,9 m

The mouse is available fors right-handers and left-handers.

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Price: 950 EUR or 1000 USD