Follow their trend of shoehorning Master into the name of all of their products, Cooler Master have release the MasterMouse MM520.  As you can see they did not follow the pack and have created a different looking and feeling mouse.  If you have mastered the claw grip, then this mouse is designed specifically for you; if not take a look at some of the comparison shots TechPowerUp posted to get an idea how the shape of this mouse differs from the norm.  Technically the mouse should appear, it uses the PWM3360 optical sensor and PBT main buttons however the shape is going to play a part in your enjoyment of this rodent.

"Cooler Master's MM520 mouse uses great materials, a top optical sensor, and features highly customizable RGB lighting. While the shape might not be for everyone, it could be your top weapon of choice for all different kinds of game genres."

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