The Sony Xperia Z1's design is "Omni-Balance", according to Sony, which is focused on creating balance and symmetry in all directions. Xperia Z1 has subtly rounded edges and smooth, reflective surfaces on all sides, which are held together by a skeleton frame made from aluminium. The phone features tempered glass, which is Sony's own and they claim is even tougher than Gorilla Glass, front and back, covered by shatterproof film on front and back. The aluminium power button is placed on the right side of the device. A dedicated hardware shutter key for easy access to camera is provided on the lower right side. The location is said to make operation easier. The metallic look and positioning of the power button is inspired by luxury watch crown design. Easy access to external memory card and sim card slots are provided. The sim card can be removed easily with bare hands. The phone is available in three colours: black, white, and purple. The Xperia Z1 is thicker (8. 5mm) and heavier (169g) and has thicker screen bezels than the Xperia Z, even though the two phones share the same screen size. Sony said that the frame had to be enlarged due to the larger than average camera sensor. The camera sensor size is 1/2. 3" same as commonly are used in bridge camera. The phone is certified waterproof to 1. 5 m for up to 30 minutes. The Z1 is dust resistant with an IP rating of 55 and 58. Unlike the Xperia Z, the Xperia Z1 doesn't have a flap covering its headphone jack, but maintains its waterproofing, a move welcomed by many due to the waterproofing warranty on the Sony Xperia Z being reliant on all ports being sealed. Additional less obvious connectivity includes support for USB OTG allowing for the connection of external USB devices as well as support for MHL output connection. The Xperia Z1 comes with 2GB of RAM and Qualcomm's quad-core Snapdragon 800 processor clocked at 2. 15 GHz. It also contains a 5. 0 inch Sony Triluminos and its X-Reality Engine for better image and video viewing, the displays resolution is 1920x1080 with 441 pixels per inch. The Sony Xperia Z1 has a 3000mAh battery.