I have this for my Casio Databack/Calculator watch (CA53W-1) which I have had for a long time. I thought I had ordered 20mm wide pivot springs but I double checked and ordered 19mm which works great. Very flexible, I don't know if I'll go as far as to say it's as thin as some of the comments but time will tell but so far so good. Oh yes, a note. I'm the last one with this replacement band, so if you have a wrist size over 7 and 7/8 you might want to consider swapping it out for a Casio original factory replacement. I think the company name is Toluca in Cali. They actually called me and said my order was rushed due to a delay and I thought that was great of them. Yes, I bought a second spare just in case. I love my Casio, what can I say, and I love wearing a watch that lasts so long.
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