All in one Digital Altimeter, barometer and digital compass device. Ideal for weather forecast function. It has clock, calendar and thermometer functions. Digital altimeter is based on the technology of electronic bearing sensor and barometric sensor.
Digital altimeter possess 5 seconds blue bright LED backlight.
Digital altimeter is designed for outdoor use and the detachable string makes the digital compass a perfect hand-carry device for various outdoor activities
Altimeter: -700 ~ 9000m / -2300 ~ 29500ft .History Altitude Record: 256 records .Battery: by 2 x AAA batteries (not include) .Weight: 48g (1.69oz).Size: 90*50*18 mm (3.54*1.97*0.71 inch)