The most common and most likely answer to this crossword clue is the 5 letter word DIALS
D
I
A
L
S
More clues leading to the result DIALS
Buddy explains!

The straight part
We know that "Faces" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case faces = dials.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does DIALS mean?
DIALS noun- A graduated, circular scale over which a needle moves to show a measurement (such as speed).
- A clock face.
- A sundial.
- A panel on a radio etc showing wavelengths or channels; a knob that is turned to change the wavelength etc.
- A disk with finger holes on a telephone; used to select the number to be called.
- A person's face.
- A miner's compass.
- To control or select something with a dial, or (figuratively) as if with a dial.
- To select a number, or to call someone, on a telephone.
- To use a dial or a telephone.