Specifications: Item Type: Multifunctional Meter Product Model: FR510 Material: ABS Power Supply: x Lithium Ion Battery 230mAh(built in) Charging Voltage: DC 5V Height: Measuring : -700 to 9000 meter (-2296 to 29500 ft) Accuracy: 1m/ft Function: Maximum and minimum height records, 24 hours of historical height records have been plotted Height Gain and Loss Calculation : 44999m/ft Function: Sea height setting, height change warning, target height warning. distance, speed, vertical rate, recording Pressure: Measurement : 300hpa to 1100hpa (8.84inHg to 32.44inHg) Accuracy: 0.1hpa (0.01inHg) Function: Historical pressure curve of the past 24 hours Weather Forecast: Clear, cloudy to clear, cloudy, rainy Function: Barometric trend indication, sea pressure setting Temperature and Humidity: Temperature Measurement : -20℃-60℃ Humidity Measurement : 20%-95% Function: ℃ ℉ unit switching, maximum and minimum temperature and humidity recording Time: Hours, minutes, seconds Date: Year, Month, Day, Week Time Function: Alarm function, period setting : Direction, distance, speed, point settings : Direction display, angle display, magnetic declination setting Product Features: . Beidou system compatibility, star locating function, speed, distance, sets of and records 2. Height gain and loss, 7x24 hours of historical height data and curve recording 3. Height change interval prompt, 4. Height target reminder setting 5. Historical height data analysis, temperature and humidity records. 6. 24 Hour Pressure Trend Curve Display 7. 16 Directional electronic function 8. Temperature, humidity, time, date, alarm clock, flashlight function . IPX4 grade Voltage Parameter How to Use Package List x Altimeter x Charging Cable