The Das Keyboard 'Prime 13' & '4 Professional' Mechanical Keyboard Review
 

In this review we are taking a look at two mechanical keyboards from Das Keyboard, the 4 Professional and the Prime 13. The 4 Professional is a very popular keyboard that is being heavily marketed towards professionals, while with newly released Prime 13 the company is trying to expand their market base.

http://www.anandtech.com/show/10865/...ional-prime-13