1) Altimeter: Range from -2,296 feet to 29,500 feet (-700 meters to 9000 meters) 2) Weather forecast 3) History Altitude record: 256pcs records 4) Compass: Show bearing in degrees and cardinal point 5) Thermometer: C or F degree format 6) Clock: In 12 hours or 24 hours format 7) Calendar 8) Backlight 9) Battery: 2 AAA batteries (No include) 10) Size: 90*50*18mm 11) Weight: 48g

http://olla.gr/digital-compass-altimeter-barometer-thermo/