It’s rare, but it happens. Quartz watches will usually lose time under 3 conditions, but technically all 3 can be avoided. The most obvious is shock; If you drop and bump the watch, the watch may move the hands out of place and display the incorrect time. Some watches, such as the G-Shock, are specifically designed to prevent this, and some even have manual correction if this is the case. The next thing is also somewhat obvious, that all things battery powered sometimes need a new battery. Some watches run slow when the battery runs out, others have a “low power mode” where the watch pauses the seconds hand for 1, 2, or 3 seconds to indicate that the battery is low and needs to be replaced. Finally, the rarest and most confusing is heat. Fluctuating temperatures can affect the watch’s components and their ability to function, causing them to behave differently than they should, which can slow down the watch’s performance.