Sony is adding yet another addition to its XZ2 lineup with the introduction of the XZ2 Premium. The new Xperia model will feature a 5.8" 4K HDR display and an all-new 19MP camera that can shoot video at up to ISO 12800 and up to ISO 51200 for photos. Power comes from the Qualcomm Snapdragon 845 processor and that will be joined by 6GB of RAM and 64GB of onboard storage with microSDXC expansion up to 400GB. 

sonymobile.com