Feature：<br /><br />Electronic compass:<br />Accuracy ± 3 degrees<br />Resolution 1 degree<br />Display mode: 360 ° 9 bp segment<br /><br />Thermometer:<br />Accuracy is ± 2 degrees<br />1 degree resolution<br />Thermometer format: ℃ and ℉ unit optional<br />Range: -5 ℃ ~ + 50 ℃<br /><br />Calendar:<br />In the same month， date， time and week<br />Time format: 24H or 12H (AM / PM)<br /><br />LCD display: display with LED backlight (blue)<br /><br /><br />Package Includes:<br />Altimeter * 1<br />Lanyard * 1<br />Instructions * 1<br /><br />Power: two "AAA" batteries<br /><img src="http://img6.eachbuyer.com/x9/p100/eb04501_1.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/eb04501_2.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/eb04501_3.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/eb04501_4.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/eb04501_5.jpg" />