16570:
1)40 mm case
2)Slimmer case
3)smaller hour, minute, and seconds hands
4)red GMT hands
5) calibre 3185 or 3186 depending on the production year.
216570:
1)42 mm case
2)Thicker case
3)Larger hour, minute, and seconds hands
4)Orange GMT hands and orange text
5) calibre 3187😎
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Editorial Author
benaldo
Horology contributor and watch collector at SGWatchHub. Passionate about vintage timepieces, market trends, craftsmanship, and Singapore's horological community.
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