Casio G-Shock
Hey everyone,
I calibrated as best I could all 4 watches that I had at that time to the nist.gov internet time on my PC on the 1st of January. Today, 28 days later, here are my not-very-scientific findings:
Casio PRG510T - 5 secs fast
Casio SGW-400 - 4 to 4.5...