Description:
The device is based on the technology of electronic bearing sensor and barometric sensor. The digital altimeter is designed for outdoor use, the detachable string makes the digital compass a hand-carry device for various outdoor activates it will give you backlight when you press any button in any time.

Features:

Real-time Altitude Monitoring: Measures elevation differences via barometric pressure sensors. The altimeter barometer covers a range from -700 meters to 9000 meters with 1-meter resolution, assisting climbers in route planning and preventing altitude sickness. For instance, at elevations above 5000 meters, the device provides early warnings for sudden pressure drops
Barometric Trend Analysis: The digital barometer integrates 12-24 hour weather forecasting, enabling users to assess storm or clear weather probabilities. Field tests indicate that each 1 hPa drop in barometric pressure may increase altitude measurement error by 0.8 meters, necessitating GPS calibration

Specifications:
Material: ABS
Color: Black
Size: approx. 9 x 5 x 2cm / 3.54" x 1.96" x 0.78"
Strap Material: Cotton Fabric
Battery: 2 x AAA batteries (not included)
8 in 1 Function:
Altimeter(Range): -700 meters - 9000 meters / -2300-2950ft (resolution ratio-1m/3ft)
Barometer(Range): 350mbar-1100mbar (resolution ratio-0.1mbar)
Digital Compass: show bearing in degrees and cardinal point
Thermometer(Range): -10 Degree to +60 Degree, (Format ):°F/°C
Weather Forecast: Start the machine, it can forecast the weather in the next 12-24 hours, the effective range of 30-50km
LED Backlight: In any state, press any key to open the backlight, when open backlight, press any key to extend the time of 5 seconds
Clock Format: 12Hr/24Hr (AM/PM)
Battery: 2 x AAA batteries (Not Included)
Package Included:
1 x digital altimeter
1 x rope
1 x manual