Think about their style. Do they like sporty looks, vintage pieces or minimal designs? A retro digital model with a resin build feels totally different from a silver analogue with a sunray dial. If you’re unsure, neutral colours like silver, black, navy or white are always a safe starting point.
Pay attention to wrist size. If they prefer lightweight accessories, go for a smaller case (usually under 38mm), while those who like chunkier styles might appreciate something closer to 42mm or more. CASIO offers both standard and small-size models across many designs, which is helpful if you’re buying a matching set for two people with different preferences.