Digital Altimeter, 8 In 1 Handheld Electronic Altitude Gauge Thermometer Barometer Carabiner Altimeter for Outdoor Hiking Camping Fishing Features: Multi-function: Digital altimeter comes with digital barometer, weather forecast, time, calendar, thermometer and backlight. Upgraded: The second generation of the revised outdoors altimeter canceled the compass (ally easy to measure with error, and the error is a bit large), increased the display of the altitude. The altitude is now measured by itself in 2 minutes after the start, you dont have to input it manually, and the al machine was input manually. It is accompanied by historical altitude pressure records and can store up to 256 records. Altimeter Barometer: Designed for outdoor use, and it is the perfect equipment for a variety of outdoor activities. Can be hung on a backpack, belt for easy carrying, when you press any button at any time, it will provide you with backlight. Altimeter: -700 meters ~ 9000 meters (-2300 ~ 2950 feet) measurement range (altimeter can be used for the first test correction.). 1 meter or 3 feet resolution. Predict Weather Situation: Start up to predict the weather conditions in the next 12 to 24 hours, and the effective range is 30~50KM. Specifications: Scope of application: camping, mountaineering, gift giving Package included: 1 x Multi function Altimeter