handheld vs hand-held

handheld and hand-held both are adjectives.

Word	Noun	Adjective	Verb	Adverb
handheld	No	Yes	No	No
hand-held	No	Yes	No	No

As adjectives, handheld and hand-held are synonyms defined as:

handheld and hand-held: small and light enough to be operated while you hold it in your hands

handheld (adjective)	hand-held (adjective)
small and light enough to be operated while you hold it in your hands	small and light enough to be operated while you hold it in your hands