Chronometer watches are highly sought-after timepieces that are renowned for their precision and accuracy. There are several synonyms used for the word "chronometer watch", including: 1. Precision watch: This term highlights the acute accuracy of a watch's timekeeping abilities. 2. Observatory watch: This term highlights the rigorous testing that chronometer watches undergo to ensure their accuracy, as they are tested in observatories. 3. Mechanical watch: This term emphasizes the intricate gear work that powers these watches. 4. Marine watch: This term highlights the original use of chronometer watches, which was for navigating at sea. 5. Timepiece: This term is a general synonym for any watch or clock that tells time with accuracy.