The Timepiece Journal

Thinking of buying an Omega Seamaster? Counterfeit Seamasters are among the most common fake watches on the market. This guide covers 12 specific authentication tests — from the dial to the movement — so you can buy with confidence.

Everything you've ever wanted to know about COSC chronometer certification — answered clearly and concisely. From what the certificate means to whether it's worth paying for.

Ever received a chronometer certificate and wondered what all those numbers mean? This guide explains every field, every criterion, and what the data tells you about your watch movement.