Year introduced: 2013
Capacity: 16, 32, 64 GB
Colours: space grey, silver, gold
Model number on the back cover: A1453, A1457, A1518, A1528,
A1530, A1533
 
Details: the front is flat and made of glass. The back is anodised aluminium. The Home button contains Touch ID. There's a True Tone LED flash on the back and a SIM tray on the right-hand side that holds a "fourth form factor" (4FF) nano-SIM card. The IMEI is etched on the back cover.
See the tech specs for iPhone 5s.