The more watts a hair dryer has, the more powerful the motor is and the faster the hair dries.

Indicatively:

up to 1000W: Low temperature that reduces the risk of damage to sensitive hair. Suitable for removing moisture from the hair, not for styling or volume.

1000–1400W: Ideal for daily use on fine/short or children's hair. Offers gentler drying without "burning".

1400–1800W: Medium power suitable for daily use. Suitable for normal to slightly thick hair and basic styling with a brush or simple straightening.

1800–2200W+: High performance for quick drying on thick or long hair. Suitable for styling with volume and straightening, or curls with a brush.

Temperature settings for greater control during drying and styling.
1 temperature setting: Only one fixed temperature. Usually found in very basic or travel models.

2 temperature settings: Usually low and high.

3 temperature settings: Low, medium, and high. This is the most common option.

4+ temperature settings: Offer greater control, useful if you have sensitive, dyed, or fine hair.