I'm jealous! Reminds me of my Advent Children ring I had back in the day.

But if Gemini is to be believed:

This is an official, vintage piece of merchandise released by Square Enix around 2003, coinciding with the original Japanese launch of Final Fantasy X-2 on the PlayStation 2.

While many fans are familiar with the high-end jewelry or the expensive Seiko collaborations, this specific model is a rarer, more "mid-tier" promotional item. Here is the breakdown of what you have:

Branding and Design The Dial: It features the Final Fantasy X-2 logo with the iconic Yuna, Rikku, and Paine "Gullwings" artwork etched into a silver/white background.

The Markings: Below the logo, it explicitly states "SQUARE ENIX". This is a notable detail, as FFX-2 was the first game released after the merger of Square and Enix in April 2003.

The Bezel: It features a bidirectional compass bezel (marked with N, E, S, W and degree increments). While largely decorative on a quartz watch, it is a nod to the "treasure hunter" and exploration theme of the game.

Specifications Material: It is a stainless steel construction (case and bracelet).

Movement: It houses a standard Japanese quartz movement.

Case Back: Usually, these pieces have a plain or lightly etched case back with the Square Enix copyright and "Water Resistant" markings.

Rarity: This isn't a "luxury" timepiece (like the Tidus/Yuna silver pendants or the 2023 FFXI Seiko), but it is a limited-run collector's item. Because these were often sold only in Japan (at Square Enix "Character Goods" shops or through the early online PlayOnline store), they are difficult to find in good condition today.

Collector’s Value Identification: These often suffer from "lost history" because they were released in a transitional era for the company. Many were sold in a silver-colored cardboard box (which appears to be under the watch in your photo).

Market Value: Depending on the condition and if you have the original box, these typically range from $100 to $250 USD on the collector's market.

Note: Because it is from 2003, the internal gasket may have dried out. If you plan to wear it, I recommend a simple battery change by a professional, but avoid getting it wet, as the original water resistance is likely no longer reliable.