?This multi-functional digital altimeter is ideal tool for camping， climbing or other outdoor use. With portable size， easy to carry.<br> <br> Features:<br> This multi-functional digital altimeter is ideal tool for camping， climbing or other outdoor use.<br> It combines functions of altimeter， compass， thermometer， calendar， barometer， weather forecast and time display.<br> Press the "ALTI" button to measure the height above sea level where you stand. Hold it for 3s， it measures the relative height.<br> Press the "COMPASS" button， the arrow shows you the direction.<br> Press the "SET" button to set date， time and temperature format.<br> With green backlight， it is convenient to use at night.<br> Small in size， easy to carry.<br> <br> Specifications:<br> Material: ABS<br> Color: Grey<br> Altimeter:<br> Measurement Range: -700m to 9000m / -2296ft to 29500ft<br> Resolution: 1m / 3ft<br> Barometer:<br> Measurement Range: 350-1100hpa<br> Resolution: 1hpa<br> Compass:<br> Accuracy: ÷3▲<br> Resolution: 1▲<br> Thermometer:<br> Accuracy: ÷2▲C<br> Resolution: 1▲C<br> Temperature Format: ▲C / ▲F<br> Measurement Range: -5▲C to 50▲C<br> Battery: 2 * AAA Battery(not included)<br> Item Size: 12 * 7.5 * 2.5cm / 4.7 * 3 * 1in<br> Item Weight: 93g / 3.3oz<br> Package Size: 14 * 9 * 4cm / 5.5 * 3.5 * 1.6in<br> Package Weight: 118g / 4.2oz<br> <br> Package List:<br> 1 * Altimeter<br> 1 * User Manual(English)<br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>