I loved that phone, its camera quality is awesome. It has android 5.0 lollipop O.S, 4 GB ram and 128 GB internal memory, 13 MP Rear Camera and 5 MP front camera with 1920 x 1080 Video Recording, dual tone real flash, 5.5 inch Full HD, 1920 x 1080 Pixels display with IPS Display, Corning Gorilla 4 Glass, 10-finger Touchscreen, Asus TrueVivid Full Screen Lamination Technology, 178 Degree Angle View, Li-Polymer, 3000 mAh battery (it is not removable battery), 2.5 GHz+ Intel Atom Z3590, Quad Core Processor.
Overall the phones looks is nice and it comfortable. it comes with 1 year manufacturing warranty. as my recommend go and buy this phone.