Specification : Altimeter : -700 ~ 9000m / -2300 ~ 29500ft Weather forecast.
History Altitude record : 256 pcs records .
Compass : show bearing in degrees and cardinal point.
Thermometer : In ºC / ºF format .
Clock: In 12 hours or 24 Hours format Calendar Backlight.
Battery :by 2 x AAA batteries ( included ).
Weight: 48g .
Size: 90 x 50 x 18 mm .