NIU Niutek 4.5D official Pictures. NIU Niutek 4.5D is a Smartphone of niu. The NIU Niutek 4.5D Android Smartphone. Announced Dec 2013. Features 4.5″ Display, MT6572 Chipset, 5 MP Primary Camera, 1.3 MP Front Camera, 1650 MAh Battery, 512 MB Storage, 256 MB RAM. NIU Niutek 4.5D price starts.