I own a GA100 G271 Casio G-Shock, which happens to be the first Casio watch I ever bought. Shortly after purchasing it, I noticed that the time seemed to run fast—approximately 15 seconds in a month. At the time, being new to watches, I assumed this might be common for G-Shocks and didn't reach out to anyone for help. However, recently, a friend of mine also acquired a GA100, and when I asked if they encountered a similar issue, they said no. Now, it's been two years since I purchased the watch, and I believe it's no longer under warranty. I would greatly appreciate it if someone could provide me with a solution or a fix for this issue as it has been really annoying for me.