This is the HiPhone Nano N3+, a 2.8-inch touchscreen based with swivel screen cellphone. It's a Chinese clone of an Apple product that never happened, but which actually looks like it could have happened.
Until the Meizu M8 is released, this C-002 HiPhone seems to be the most iPhone of iPhone clones out there. As you can see from the video unboxing, it even comes in an iPhone-esque box and has iPhone-like accessories (protective cover, white earbuds). The UI? Well, just watch.