Microsoft has launched its first large scree mobile and with great features this was realsed on april 2015 it weights 171grams with dimensions 157.9x81.5x9mm and it has large screen of 5.7inches with screen resolutions 720x1280pixles( ~259ppi pixel density) and it comes with corning GORILLA GLASS 3 AND IT COMES OS WINDOWS 8.1 WITH LUMIA DENIM AND CHIPSET QUALCOMM MSM8226 SNAPDRAGON 400 OF CPU QUADCORE 1.2GHZ AND GPU ADRENO 305 BUT IT HAS LOW RAM OF 1GB AND 8GB ROM ONLY I THINK THE RAM AND ROM NOT SO HIGH AND IT COMES WITH PRIMARY CAMERA 13MP F/2.0 AND SECONDARU CAMERA 5MP AND IT CAN ALSO CONNECT WITH WIFI 802.11b/g/n, DLNA, BLUETOOTH v4.0 . IT HAS SENSORS OF ACCELEROMETER, PROXIMITY, COMPASS, SENSORE CORE, AND IT COMES WITH 3000MAH AND THIS COMES IN 5 DIFFERENT VARIENTS 1) MATTE CYAN, 2) ORANGE, 3) BLACK, 4) MATTE WHITE , 4) GLOSSY WHITE