The handset is expected to include a 5.2 inch Triluminos display with a quad-core 2.3GHz Snapdragon 800 processor running the show. 3GB of RAM is included with 16GB of native storage on board. A 20.7MP snapper with 4K video playback graces the rear of the phone, and Android 4.4.2 is pre-installed.
You can take a look at how thin the side bezels of this panel are by clicking on the sideshow below.
Front panel of Sony D6503 Sirius is posted on Japanese site