We’ve been expecting a price tag and launch date for the Geeksphone Revolution for a while now, and today we finally got them. The world’s first dual-booting handset, which runs both Android and Firefox OS, will go on sale next Thursday, February 20, priced at €289 ($395).

That’s just four days before Mobile World Congress 2014 kicks off in Barcelona, but in an effort to grab your attention ahead of the event, Geeksphone is offering early adopters a €20 ($27) saving when they buy the Revolution online. It’s unclear at this point how long that offer will last.

The Revolution sports a 4.7-inch qHD display and is powered by a 1.6GHz dual-core Intel Atom Z2560 processor. Other internals include 1GB of RAM, 4GB of internal storage, a microSD card slot, and an 8-megapixel rear-facing camera capable of shooting 1080p video at 30 frames-per-second.

While those specifications won’t allow the Revolution to compete with the latest Android-powered flagships, its ability to dual-boot into Android or Firefox OS will be the handset’s main selling point. It should be particularly interesting to those who want to use Firefox OS on a regular basis without completely ditching a more established platform — such as developers looking to build Firefox OS apps.

• ViaEngadget