We knew the Open C was coming before the start of Mobile World Congress because, well, ZTE spilled the beans on it early. And here at Mozilla's press event, we're finally getting a first look at the diminutive 4-inch device and the 1.3 build of Firefox OS it runs. But before you judge its modest specs too harshly, bear in mind these FFOS devices are geared towards emerging markets and are priced accordingly.

Owing to its budget nature, the Open C sports a chunky plastic build and, from the looks of the two models we saw on display, will be available in Mozilla's two signature colors: orange and blue. The handset's equipped with a 4-inch WVGA display and runs FFOS 1.3 atop a dual-core 1.2GHz Snapdragon 200 with 512MB of accompanying RAM. There's also a 2-megapixel fixed focus camera on back and 1,200mAh battery powering it.

Update: ZTE just informed us, the Open C will come in a total of six colors, including black, white and fuscia. Go pick your favorite!