The G-Shock Gravitymaster GA-1100-1A1 is a September release in Japan and Asia. This analog-digital aviation watch has a blacked out exterior, a dual-color band with a gray inner layer, and red, blue, and yellow accents on the display. The simple black and gray scheme with primary color accents presents a tough, classic G-Shock look that makes this our favorite GA-1100 model.
The GA-1100-1A1 has the Twin Sensor including a compass and thermometer. Other distinguishing features are dual dial world time and the auto Super Illuminator LED light. Full features include shock resistance, 200-meter water resistance, luminous hands and markers, world time, 1/100 second stop watch (max 59’59.99”), countdown timer (max 60 minutes), and 5 daily alarms. (The Casio International website has Tough Solar listed as a feature but this is not a Tough Solar model.)