The Master of G-Shock Gravity Master boasts twin sensor functionality, with one-touch easy access to compass and temperature readings, in an aviation inspired design. It features a world time function with pilots in mind offering the current location time on the main dial and a second city/time zone on the sub-dial, located at the 9:00 position on the watch face. The unique hand-shift feature prevents blocking of sensor readouts on the digital display and a high intensity LED allows quick illumination of the dial for easy reading of time and data displays under dark conditions. The watch also has five daily alarms, an hourly time signal and a full auto-calendar that is pre-programmed until the year 2099. The watch is shock resistant and water-resistant up to 200 m and it takes two SR927W batteries (included).