Citizen Eco-Drive Chronograph Titanium

The watch in your image is the Citizen Eco-Drive Titanium Chronograph, specifically model AT0100-51A. It is a lightweight, diver-style timepiece designed for durability and daily wear.
## Core Specifications

* Movement: Caliber H500 Eco-Drive, powered by any light source (no battery changes needed). It features a 150-day power reserve on a full charge
* Build: Both the 44mm case and the bracelet are made of solid titanium, making it 40% lighter and significantly more scratch-resistant than stainless steel
* Water Resistance: Rated for 200 meters (20 bar), making it suitable for swimming, snorkeling, and scuba diving

## Key Features

* Dial: A wave-patterned silver/gray dial with luminous hands and markers for high visibility
* Functions: Includes a 60-minute chronograph, a 24-hour indicator, a small seconds subdial, and a date window at the 4 o'clock position
* Bezel: Features a unidirectional rotating bezel to track elapsed time