The Sony Xperia Z5 Premium is the Japanese company's flagship device for 2015. It's standout feature is its 4K 5.5" IPS LCD display, which boasts a resolution of 2160 x 3840, giving it a pixel density of 806 pixels per inch. As with the other Xperia Z5 devices, the Sony Xperia Z5 Premium is powered by a 2GHz octa-core Qualcomm Snapdragon processor and 3GB of RAM. It has 32GB internal storage, and can take up to 200GB more with microSD card. The Xperia Z5 Premium boasts a 23MP shooter on the rear, with fast phase detection autofocus and 4K video recording, while the front has a 5.1MP camera with 1080P video recording. Other features of the Xperia Z5 Premium include IP68 certification, meaning it's dustproof and waterproof, a fingerprint sensor, and a 3430mAh battery.