<b>Multifuncion barometric altimeter & compass FR500 incorporates altimeter, barometer, thermometer, compass, flashlight and weather forecast functions etc. Adopting super-accuracy sensor from Swiss, it deserve to be called a professional outdoor equipment. </b><p> <b>Features: </b><br> ● Adopt super-accuracy sensor from Swiss<br> ● Altitude total gain/loss, 24 hours altitude record and trend chart<br> ● Max/Min altitude,temperature,humidity record<br> ● 24 hours air pressure trend chart<br> ● Incorporate altimeter, barometer, compass,thermometer and hygrometer functions etc.<br> ● Time, date, alarm clock functions<br> ● Built-in rechargeable battery<br> ● IPX4 waterproof<p> <b>Specifications: </b><br> Altimeter:<br> Altimeter range(-700 to 9000m/-2296 to 29500ft)<br> Resolution of 1 meter/feet<br> Max./Min. memory for altitude<br> Altitude history and graphical display of the last 24 hour altitude readings Altitude total gain or loss 44999 meter/feet<p> <b>Barometer: </b><br> Pressure range 300hpa to 1100hpa(8.84inHg to 32.44inHg) <br> Resolution of 0.1hpa(0.01inHg)<br> 24 hour pressure history and graphical display<br> Electronic pressure weather forecast(sunny, slightly cloudy, cloudy, rainy)<br> Pressure trend indicators