Digital Barometer Altimeter,Hiking Barometer, Altimeter for Hiking, Electronic Altimeter, Multifunctional Barometer, [Practical Feature]: Coming with historical altitude and air pressure records up to 256PCS, Digital Barometer Thermometer is featuring a larger altitude display screen, able to auto-measure in about 2 minutes after starting up. [Precise Design]: Portable Barometer for Hiking is featuring a measurement range of about -700M - 9000M (-2300FT - 2950FT), able to be accurate in 1M or 3FT resolution, a precise and practical hiking accessory. [Distinctive Weather Forecast Feature]: Designed to auto-predict after starting up, Digital Altimeter Barometer is able to predict the weather conditions in the next 12 to 24 hours, featuring an effective range is about 30-50KM (18.642-31.07MI). [Versatile Purposes]: A perfect device for various outdoor activities, Digital Altimeter Hiking is specially designed for outdoor use, able to hang on your backpack or belt. [Multi Functions]: Altimeter for Hiking is coming with a weather forecast, clock, calendar, and thermometer, combined with multiple functions in a single device, not only an altimeter but also a barometer.