The AT773 is versatile wrist-top computer watch with altimeter, barometer, compass, thermometer, and stopwatch. The watch also calculates sunrise, sunset, moon phase and tidal information.
The calibratable altimeter measures current altitude, high and low altitude memory, total altitude gain and loss, number of hills and includes a graphical interface.
The wrist-top computer measures barometric pressure and displays absolute and sea level pressure, and forecasts weather based on rate of change of pressure.
The electronic magnetic compass guides you with a 16 point cardinal compass and displays 1 degree resolution. Includes a declination correction feature for upmost accuracy (declination is the difference between magnetic north and true north).
The AT773 features Electro-luminescent backlight, user-replaceable battery, and large, bold silver housing with decorative (non-functional) winding mechanism. The case is water resistant, and includes 1-year factory, warranty.
An indispensable instrument for outdoor enthusiasts, the Ambient Weather AT773 wrist-top computer combines an altimeter, barometer, compass, and thermometer, letting you plan and execute almost any activity with confidence and safety.
Perfect for hiking, camping, running, biking, skiing, snowboarding, mountaineering, climbing, boating, kayaking, or outdoor activity. The ski feature allows you to graphically evaluate your ski run.
The T773 also keeps you in touch with your local environment, providing sunrise, sunset, moon phase and tidal information perfect for hunting and fishing enthusiasts.
Other features include dual time clock, auto calendar, clock alarm, hourly chime signal, and chronograph with lap feature.
Important Note: Altimeters are often misunderstood because they do not measure your actual position on the earth (true altitude) such as a GPS, but measure the air pressure and predict the altitude based on this measurement.
This is referred to as "Pressure Altitude". Pressure Altitude is adversely affected by the true altitude and to a lesser extent, changes in the weather, often referred to as barometric pressure changes.
Thus, your Pressure Altitude can change without changing your position. These changes can be as great as a thousand feet (the changes due to weather are more pronounced at higher altitude).
To offset the difference between Pressure Altitude and True Altitude, you must calibrate the device at a known altitude, whenever convenient.