Sony has introduced the Xperia Z3+ in the UK.

The "premium addition" to the Z3 series is a slimmer and lighter version of the Z3. It brings waterproof and dust-tight design.

The Z3+ carries a Snapdragon 810 octa-core 64 bit processor, running Android Lollipop. It also features an ultra-bright 5.2" Full HD smart adaptive display and high-resolution audio.

The device features a 20.7 MP main camera, with Exmor RS for its mobile image sensor, BIONZ for its mobile processing engine and a 25mm wide angle G lens. It also features a 5MP front or ‘selfie’ camera.

In addition, its LTE Cat 6 and Wi-Fi MIMO support allow faster connection speeds and it provides up to 300 Mbps LTE data download speeds.

"Sony Mobile today introduces a premium addition to the Xperia Z3 series flagship smartphones with Xperia Z3+, a slim, sleek and stylish high-performing premium smartphone," a statement from the company said.

"Xperia Z3+ helps you get the best pictures with Sony‘s superior camera technology that is now packed into both the main and front cameras. Impressive smartphone battery stamina and performance keeps you connected faster and longer, whether for work or play. And Sony’s unique signature waterproof1 design ensures you can do it, whatever the weather."