Rbt The Carpal Tunnel Relieving Mouse Has Met Half Its Goal With A Month To Go

According to the campaign page:

That being said, the mouse is intended to be fully usable to play competitive games, such as Overwatch, League of Legends, or SMITE. It was created by a gamer, after all. Investing $150 dollars will net you the mouse, which is a 62.5% discount from its $240 projected retail price. While this is oddly the lowest tier that you can back while receiving an award, you can donate regardless. 

You can read more about the process of its creation and intended uses here on GameSkinny as detailed by the creator himself.