Casio Edifice EF-539D series watch, likely the EF-539D-1AVEF or EF-539D-1AVDF model.

This timepiece is a sophisticated silver chronograph men’s watch known for its precision and style.
Key features include:
. Design: A sporty design with a large face, featuring a stainless steel case and a two-tone stainless steel band with partial ion plating/rose gold-tone accents.
.Dial: A round white or silver dial protected by a durable mineral glass crystal.
. Functions: Includes a stopwatch function, a date display, and a tachymeter on the bezel.

.Water Resistance: Built with 100-meter (10 ATM) water resistance and a screw lock back, making it suitable for swimming.