iPhone 5S: Key features on Apple's 'forward-thinking smartphone'

The Touch ID feature on the iPhone 5S allows users to unlock their phone using their fingerprint (Reuters)

Apple has described the new iPhone 5S as the “most forward-thinking smartphone in the world”.

The device's features include:

* An 8-megapixel camera.

* Touch ID, allowing users to unlock their phone with the touch of a finger.

* A 64-bit A7 chip which is said to be twice as fast as the iPhone 5.

* A new slow-motion video and FaceTime HD camera.

* Support for up to 13 LTE (Long Term Evolution) wireless bands and download speeds up to 100 Mbps.

* Ten hours of talk time on 3G networks, up to 10 hours of web browsing on Wi-Fi and LTE networks, up to eight hours on 3G networks, 10 hours of video playback and up to 40 hours of audio playback.

* iTunes Radio, a free internet radio service based on the music users' listen to on iTunes.

The iPhone 5S comes in three colours - gold, silver and "space grey" - and has a retail price of £549 for the 16GB model, £629 for the 32GB and £709 for the 64GB. It will be available in the UK on Friday September 20.