It has been rumoured for some time, so it's with some relief that we tell you that the Sony Xperia Z1 Compact has been confirmed.A smaller version of its flagship, but this isn't likely to be a budget model. It's still a powerful little thing. Just easier to slip into your pocket, being sized at 127 x 64.9 x 9.5mm.In fact, size and screen apart, the specification isn't a million miles away from its big brother. What you get is a 4.3-inch IPS 1280 x 720 screen with 341ppi, the same 20.7-megapixel camera as the standard Z1, a 2.2GHz quad-core Qualcomm Snapdragon 800 processor, 2GB RAM and Android 4.3 Jelly Bean, although the Android OS should be updated to Android 4.4 KitKat in a matter of weeks. Colour choices are pink, lime, white, and black, the phone will still be waterproof (as the image above hints at) and you'll get 16GB of storage, although you can boost that via the microSD slot. One other thing has shrunk down too, that being the battery. A 2300mAh battery is inside, compared to the 3000mAh battery in the Z1. A downside of going 'compact'.It will head to the UK in mid-February, with pricing still to be confirmed. Sony seems at pains to point out that this isn't less of a phone than the Z1 (size aside), so don't go expecting the handset to be a cheapie when it does land.