Spec:

Item Type: Multifunction Digital Altimeter
Altimeter:
Approx. -700~9000m / -2300~29500ft measurement range (the altimeter can be used for initial calibration)
Resolution: Approx. 1m / 3.3ft
Barometer:
300mbar-1100mbar measuring range
Resolution: 0.1mbar
Electronic Compass:
16 directional mode display
External magnetic field correction
Accuracy: ±3°
Resolution: 1°
Thermometer:
Measuring range: -10℃-+60℃ (℃ and ℉ unit adjustable)
Resolution: 0.1℃
Weather Forecast and Time:
Forecast 12 to 24 hours weather conditions
4 types of weather forecasts: Sunny-partly sunny-cloudy-rainy
12/24 hour time format
Electronic Backlight:
5 seconds high brightness blue LED electronic backlight
Battery: 2 x AAA (not included)
Accessories: Lanyard, English user manual

Package List:
1 x Multifunction Digital Altimeter1 x Lanyard
1 x English User Manual

Note:
1. Avoid using it under rain, damp, high or low temperature, etc. (working temperature: -20℃‑60℃; storage temperature ‑20℃‑60℃).
2. Avoid with erosion substances such as perfume, alcohol, cleaning agent, etc.
3. Avoid using the following areas that may affect the normal direction of the magnetic compass:
A. Near buildings such as concrete/steel
B. Very close to the power station
C. Very close to household appliances (such as computers, TVs, fax machines, speakers, etc.)
D. Very close to a bridge made of large amounts of steel or metal
E. When the vehicles (cars, trains, airplanes) are moving very close
F. Close to or placed on the surface of the metal plate