Is this a quartz or automatic watch?

It is a quartz watch, so it runs on a battery and needs no winding. Expect a battery change every couple of years.

It is water resistant for splashes, handwashing and rain, not for swimming or diving. Take it off before showering or pool use.

What size is the case?

It is a standard men's case size in the low-to-mid 40 mm range, suited to average to larger wrists. Check the case diameter against a watch you already own if you are unsure.

Does it come with a warranty?

Tommy Hilfiger watches typically carry a limited manufacturer warranty covering movement defects, handled through the brand or an authorized dealer. Keep the paperwork.

How does it compare with a Seiko or Citizen at the same level?

Those brands offer better movements and materials, often with sapphire or solar technology. This Hilfiger trades that for a stronger fashion identity and the flag logo.