SUUNTO Vector HR Wristop Computer Watch The altimeter measures vertical speed, and works with the HR monitor so you can see the physiological impact of both altitude and vertical movement The heart rate monitor gives an objective measure of exertion, includes a heart rate zone alarms and Suunto Comfort Belt HR transmitter Displays real-time barometric pressure and temperature, weather trend graph of the past four days barometric data The digital compass guides you with cardinal or half-cardinal points and a north-south arrow, range up to 9,000 m / 29,500 feet Displays the current time in 12- or 24-hour format and includes three daily alarms and a calendar and 2 year warranty