Prying open the back cover reveals the3, 100mAh removable battery hanging out with microSDXC and micro-SIM slots, as well as contacts for NFC and wireless charging.
On its back, two strips of soft-touch plastic break the back into segments: a removable bit up top that houses the 3.5mm headphone jack, a micro-SIM, a vacant microSD slot (the phone comes with 16GB of internal storage) and a fixed piece at the bottom, above which you'll find the Xperia logo.