Overview: This is a small designed & multifunctional altimeter, ideal for outdoor travel or climbing Carabiner included for easy carrying Altimeter: Absolute sea level altitude measurement Barometer: Range from 300mbar to 1100mbar Digital Compass: 4-bearing mode display Thermometer: From-10℃~60℃ Weather forecase: For next 12 to 24 hours Time: With hour, minute, second Backlight: 5 seconds super bright LED backlight Specification: Product: