Multifunctional digital altimeter is based on the technology of electronic bearing sensor and air pressure sensor. It's designed for outdoor use; the detachable lanyard makes the altitude meter a perfect hand-carry or neck-carry device for various outdoor activities like climbing, hiking, fishing, camping and so on.<br> 8-in 1 LCD multifunction digital altimeter, with digital barometer, digital compass, thermometer, weather forecast, clock, calendar.<br> LCD display with backlight, easy to read even in dark environments. The digital altimeter can save 256 pcs history altitude and air pressure record for viewing.<br> Powered by a 3V CR2032 button battery(Not included batteries); and hold the 'SET' button for 5s to enter dormancy mode to save battery.<br> Pocket size and light weight, comes with a lanyard, portable and easy to carry.<br> Premium quality material, with great durability. Perfect for outdoor use, such as climbing, fishing, hiking, camping, etc.<br> Note: Size and color may be slightly different due to manual measurement and different light conditions. Thanks for understanding.<br> Screen: LCD with Backlight<br> Altimeter: -2296~29500ft Range, 3ft Resolution<br> Barometer: 350-1100hPa Range, 1hPa Resolution<br> Compass: 3 degrees Accuracy, 1 degree resolution<br> Thermometer: -5~50 (23-122) Range, 2 Accuracy, 1 Resolution<br> Temperature Unit: / Selectable<br> Weather Forecast: Next 12 to 24 hours (Sunny, Slightly Sunny, Cloudy, Rain)<br> Time Format: 12H/ 24H<br> Time: hour, minute, second<br> Calendar: month, data, year<br> Power Supply: 1 x 3V CR2032 Button Battery (Not included batteries)<br> Item Size: 93 x 54 x 15mm / 3.66 x 2.13 x 0.59in<br> Item Weight: 47g / 1.64oz<br> Color: As Shown<br> Material: ABS<br> Package Contents:<br> 1 * Multifunctional altimeter<br> Only the above package content, other products are not included.<br> Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.