Barometer: Measures barometric pressure from 8.85 to 32.45 inches of mercury (inHg) with a resolution of 0.01 inHg and from 300 to 1100 millibars (mbar) with a resolution of 1 mbar. Accuracy is ±8 mbar at tested points. Barometric pressure trend shows current reading and previous 2-, 4-, 6-, 8-, 10-, and 12-hours in bar-chart format. Barometric pressure reading is updated every 15 minutes.
Altimeter: Measures altitude from –2296 to 29520 feet (–700 to 9000 meters), with a resolution of 0.1 from –500 to 999.9, 1 otherwise. Altitude is displayed in meters or feet. Reading is updated every 2 seconds. Features a minimum/maximum memory for the altitudes reached during any time period, and the altitude trend shows present reading and previous 12-hours. May also be manually adjusted to a known altitude.
Thermometer, stopwatch/timer, clock, and compass: Thermometer displays from -10 to 60 °C/14 to 140 °F with a resolution of 0.1°. Accuracy is ±1.5°C. Temperature display is updated every minute. Stopwatch times events from 1 second to 23 hrs, 59 min, 59 sec. Countdown alarm timer counts down in from 1 second to 23 hrs, 59 minutes, 59 seconds. Resolution is 1 second. Clock displays the time of day and shows the date, month, and day of week. The clock also features a format of 12/24-hour timing and an alarm. Compass feature displays real time direction in whole circle bearing, or compass bearing. Rugged shock-resistant case, compact size 3-3/4 x 2-3/4 x ¾-inches, and light weight 3-1/2 ounces make this the perfect portable unit.