Here are the main features of Apple's newly-unveiled iPhone 5S:
- Similar slim handset to iPhone 5 but available in gold, black and "space grey"
- Prices start at £126 ($199) for the 16GB model, rising to £254 ($399)
- Features fingerprint recognition system called 'Touch ID' instead of passcode
- Improved camera captures video at 120 frames per second
- Longer battery life including 250 hours of standby life
- Able to monitor user's motion data to enhance health and fitness apps
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