Mozilla's reference device running Firefox OS, dubbed Flame, is finally shipping to developers. Armed with the latest version of Firefox OS (of course), Flame is intended for developers to use and get to know the ecosystem better, as well as help in developing apps for the same. Think of it as a Nexus for Firefox OS.
Mozilla's Flame phone packs a 4.5-inch WVGA (800 x 480) display, 1.2 GHz dual-core Snapdragon 200 chipset, adjustable RAM between 256 MB to 1 GB, 8 GB of internal storage, a microSD card slot, 5 MP rear camera, 2 MP front camera, 1800 mAh battery and NFC connectivity.
Order the Flame from Mozilla's website for $170.