Prsist Posted April 14, 2009 Report Share Posted April 14, 2009 Picked her up used from a forum member. Overall pleased. Thinking of getting an eta clone model for an upgrade in quality. > Do the asian 21j mov't models have mineral or sapphire crystals? Quote Link to comment Share on other sites More sharing options...
watchlover1 Posted April 14, 2009 Report Share Posted April 14, 2009 Usually Mineral. Quote Link to comment Share on other sites More sharing options...
krustybrand Posted April 14, 2009 Report Share Posted April 14, 2009 No point in changing the movement just for the sake of it. The 21j movements in my experience are quite robust. Replace it if and when it breaks. Quote Link to comment Share on other sites More sharing options...
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