Does it really never need a battery?

Eco-Drive charges a built-in cell from any light, so there is no standard battery to replace. Keep it where it gets light, not in a dark drawer for long stretches.

30mm is a classic women's dress-watch size and reads neat on most wrists. If you prefer a larger face, look at 34mm and up.

It is water resistant but the listing does not state a depth rating. Treat it as safe for handwashing and rain, not for swimming.

Typically the watch and Citizen's documentation. The listing does not confirm a box or warranty card, so check with the seller.

How does it compare with a standard quartz watch?

A standard quartz watch needs a battery change every few years; Eco-Drive recharges from light instead. In return, this watch has to see light regularly or it will stop.