This particular GP model appears in this forum from time to time.
This watch was sold in 2004, I bought it pre-owned 10 years ago, it hasn’t been serviced yet, to my surprise given its complication, it is still running strong.
Have owned watches that I thought were my favourites, eventually sold without a bit of regret. Every time I take this out and would rediscover once again why I love this one and why I’m not wearing Apple Watch.
Definitely a keeper for me.