Casio G-Shock Blue And Red Series Digital DW-6900AC-2 Men's WatchCasio G Shock Blue And Red Series Digital DW 6900AC 2 DW6900AC 2 Men's Watch Some will find it too bold and loud but blimey, but it breaks the monotony of the black and dark grey of the typical G Shock. It is one of the most striking red and blue models from Casio, also because of its big, bulky configurations. It creates a powerful, colourful and tough design befitting of the G SHOCK brand. Funk, form and function all within the same case.