Here's what other sites are saying:
The Casio G-Shock GW-9200-1CR multifunction watch boasts solar power, atomic accuracy and a 3-layer, structured twin sensor to measure altitude, barometric pressure and temperature. Altimeter measures elevation in 5m (20 ft.) increments from -700m (-2,300 ft.) to 10,000m (32,800 ft.) and remembers up to 20 records of altitude, date and time. Altimeter also features reference altitude setting, altitude tendency graph, elapsed time and altitude change indicator. Barometer measures atmospheric pressure in increments of 1 hPa (0.05 inHg) from 260 - 1,100 hPa (7.65 - 32.45 inHg) and graphs atmospheric pressure tendency and differential. Thermometer measures temperature in 0.2°F/0.1°C from 14 - 140°F/-10 - 60°C. Atomic timekeeping technology allows watch to automatically receive time calibration signals anywhere in the continental U.S., even for Daylight Savings Time! Tough solar power technology eliminates the need to ever change a battery; built-in solar panel converts sunlight and fluorescent light into energy. G-Shock® construction is durable and shockproof, and helps protect buttons from being accidentally pressed. Features include: day/date (preprogrammed to the year 2039), 12/24-hr. formats, and stopwatch measuring split, elapsed and 2 finish times. World time keeps you on time in 33 major cities/29 time zones. 5 daily alarms, 1 snooze alarm and an optional hourly time signal keep your day in check. Water resistant to 200m (660 ft.). Auto electro backlighting for low-light viewing.