Is the Tissot Seastar 1000 Quartz 40mm good for swimming?

Yes. It is rated to 300 m (30 ATM) with a screw-down crown, so swimming and snorkeling are well within its limits. Rinse it with fresh water after saltwater use.

How does the 40 mm version compare with the 43 mm Seastar?

The 40 mm case is smaller and thinner on the wrist, which suits smaller wrists and dressier wear. The larger model offers more wrist presence and, on some versions, a different movement.

Does it have a quartz or automatic movement?

This version uses a Swiss quartz movement. It is more accurate and needs less servicing than an automatic, but it lacks the mechanical sweep and collector appeal.

The watch comes on its stainless steel bracelet with the standard Tissot packaging and paperwork. Check the listing for any extra strap or travel case.

Is the crystal sapphire?

Yes, it has a scratch-resistant sapphire crystal, which is a step up from the mineral glass on many budget divers.

Can the bracelet be swapped?

The bracelet uses standard spring bars, so it can be changed for a strap with the right lug width. Many owners fit a rubber or NATO strap for water use.