Dear good people. I recently got this JDM watch from Japan, it's almost the same as a seiko 5 with seiko 5 internals. I was looking forward to upgrade to a sapphire crystal. The crystal seems to be 30mm, but I am quite a noob. Could kindly anyone help me on which sapphire crystal to order from AliExpress?
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Best option, pop the crystal out and measure with calipers.
Manufacturers have different levels of acceptable variation. So a 30mm might measure at 29.8mm. I always buy 3. Buy the one that closest measures to yours, then the next size smaller and the next size larger. One should usually fit well.
Thank you very much! I understand
Have you got correct size for this?