Comparing the $380 VS $680 GSTB300 G-Shock Watches - Why the Price Differences and is it worth it?

Comparing the GSTB300B-1A and the Japanese Domestic Market GSTB300XB-1A. $380 VS $680 Why the price variance and is it worth it? GSTB300B-1A FOR SALE - $160 Contact me at chavo60@hotmail.com GSTB-100 GSTB-300 GSTB-200 GSTB100 GSTB200 GSTB300 GST-B100 GST-B200 GST-B300 GSTB300B-1A GSTB300XB-1A3