Is the Marc Jacobs MBM3420 a good everyday watch?

Yes, if you want a simple designer watch for daily wear. It is a fashion piece, so treat it as style rather than a rugged or sporty watch.

Does it have a date window or chronograph?

No. The MBM3420 is a basic three-hand watch with a clean dial and no date or chronograph functions.

Can I wear it in the shower or swimming?

Treat it as splash-resistant at most. Fashion watches in this class are not meant for swimming or prolonged water contact.

How does it compare with other Marc Jacobs women's watches?

It sits among the brand's simpler round-case styles. Rivals in the line add details like crystals, bracelets or bolder dials, while this one stays minimal.

What kind of strap does it use?

It comes on a strap matched to the case, and the standard lug fitting means a jeweler can swap it for another strap of the same width.

It works well as a gift for someone who likes designer accessories and simple dials. Check the case size and strap style against what they usually wear.