It can be digital, you see (5)

I believe the answer is:

watch

I'm a little stuck... Click here to teach me more about this clue!

'see' is the definition.
(I know that see can be written as watch)

I don't understand how the rest of the clue works.

(Other definitions for watch that I've seen before include "Observe - guard" , "Look at attentively" , "View" , "period of duty" , "Vigil" .)

I've seen this clue in the Evening Standard.

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