Integrated bracelet, 35mm proportions, every dial-colour option you could want.
The Tissot PRX is the most-recommended gift watch under €500 for a reason: integrated bracelet, 35mm case sized for small-to-medium wrists, sapphire crystal, and quartz movement that needs no winding. Available in silver, blue, green, and rose-tone dials with matching guilloché pattern. The bracelet articulates well off the wrist and the clasp has on-the-fly adjustment. If you're unsure, the silver-dial 35 is the safest pick.