The NEC Medias W dual-screen Android smartphone prototype has been spotted in the wild again, this time at MWC 2013. This isn't the first time it has been previewed but this time, in the flesh.
Android Authority - "The Medias W features two 4.3-inch touchscreen displays, one on either side of the smartphone, at least in smartphone mode. Because the hinge keeping the two sides together can also offer you a 5.6-inch tablet mode, as shown in the pictures."
Specs-wise, the Android 4.1 NEC Medias W device doesn't come with top of the line hardware - it is set to feature a 1.5GHz dual-core Qualcomm Snapdragon S4 processor, two 4.3-inch LCD displays (960 x 540 pixels each), 1GB of RAM, 16GB of internal storage, 8-megapixel camera (no front-facing) and a 2100mAh battery.