CASIO G-SHOCK - When less is more: The new GA-2100-1A4ER is all black with just the right amount of flashy orange neon color accents to make it stand out. More info here:
Casio G-Shock Utility Black GA-2100-1A4ER - watchesonline.com
Casio GA-2100-5AER - Ditur
Casio G-Shock GA-2100 'CasiOak' Review: Is It Still Worth Buying? — TheWatchMuse