Is the controller able to be used on Mac for gaming?

This controller seems awesome, because they have it displayed and able to use at Apple Stores and I am thinking about getting it, especially when I get an Apple TV. I would like to know if it is compatible with Macs, because that would be a great plus if I can use it on my iMac.

SteelSeries Nimbus Wireless Gaming Controller

SteelSeries Nimbus Wireless Gaming Controller

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