GMWB5000GD-9,GMWB5000GD-1,GMW-B5000TB-1JR It is the strongest square G-SHOCK. My favorite in my collection. Full titanium, sapphire glass, and gold buttons. I bought it for 230,000 yen. : r/gshock,GMW-B5000TB-1JR It is the strongest square G-SHOCK. My favorite in my collection. Full titanium, sapphire glass, and gold buttons. I bought it for 230,000 yen. : r/gshock,CASIO - G-SHOCK FULL METAL GMW-B5000 Series