Current buyers of Microsoft's Surface 3 10.8-inch tablet will be able to get a nice accessory for free for a few days. The company is offering a free Type Cover for the tablet from now until Sunday, January 17, or while supplies last.

Normally, the Type Cover costs $129, and while officially it is an optional accessory, Microsoft likes to market its Surface tablets with those kinds of covers in its commercials. This offer is available both online and in Microsoft's retail store locations in the US only.

Buy the Surface 3 at the Microsoft Store