The Revolution comes with a 1.6GHz Intel Atom processor, a 4.7-inch screen, and either Google Android or Mozilla's browser-based mobile OS.
The Spanish company says Android KitKat 4.4 will be available on the Revolution in the "upcoming days," and it's getting ready for the next version of Mozilla's browser-based mobile OS.
Whether you're an anti-establishment journalist, a tabloid-dodging celebrity, or you just like a bit of privacy, the GeeksPhone Blackphone is a cell phone that won't sell out your data.
The Geeksphone Revolution, which lets you try out Firefox OS without burning your Android bridges, goes on sale on 20 February.
The Geeksphone Blackphone promises to deliver high phone security with an accessible interface.
Pricing not available
The Spanish handset manufacturer will use a 1.6GHz Intel Atom Z2560 chip in its top-end phone, set to arrive in the first quarter of 2014.
The Spanish company's new Firefox OS phone will include a "high-performance processor" and can run Google's Android operating system, too. The company hints it could use an Intel processor.
The Spanish startup launches preorders for an updated, higher-end smartphone costing $197 and running Mozilla's browser-based Firefox OS.
The Spanish company is expanding from the developer market to the broader consumer market with the Peak+, a higher-end phone than other Firefox OS models on sale.
Running Firefox OS mobile software, the Geeksphone Peak+ offers a memory upgrade and truly open Web-based platform, untethered from iOS and Android.