G-Shock GBD-200 Impressions: Is it just a square GBD-100? All 3 color variants inside - YouTube
Some of my favorite G-Shock's that I was able to mod. Red and black GBD-200 I made NATO adapters, blue is positive. Black GBX-100 with NATO. Cerakote, NATO and positive on the
Casio G-Shock GBD-200 Review: Perfectly Balanced | Digital Trends
G-Shock GBD-200 / 3506 / The Thinnest Sport with Bluetooth