Altitude watches are designed to measure the altitude, or height above sea level, of the wearer. These watches usually have a built-in altimeter, which measures the atmospheric pressure to determine the altitude. The watch may also include a barometer to measure changes in air pressure, which can be used to predict changes in weather conditions.
They are popular among hikers, mountaineers, and other outdoor enthusiasts who need to monitor their elevation to stay safe and navigate accurately. Some altitude watches also include features such as GPS tracking, temperature sensors, and digital compasses to provide additional information for outdoor activities. Many altitude watches are also designed to be rugged and durable, with features such as water resistance and shock resistance to withstand harsh environments.