Description:_x000D__x000D_The device is based on the technology of electronic bearing sensor and barometric sensor. The digital altimeter is designed for outdoor use, the detachable string makes the digital compass a perfect hand-carry device for various outdoor activates it will give you backlight when you press any button in any time. _x000D__x000D__x000D__x000D_Features: _x000D_1. Made of high quality ABS plastic material, which is durable, corrosion resistant and environmental friendly._x000D_2. The device is based on the technology of electronic bearing sensor and barometric sensor._x000D_3. With a rope that very convenient to carry._x000D_4. For outdoor sports enthusiasts with a wide range of essential and more precise information. _x000D_5. Ideal for outdoor sports enthusiasts made the simple type of equipment. _x000D__x000D__x000D_Specifications:_x000D_Material: ABS_x000D_Color: Black_x000D_Package Weight: approx. 94g_x000D_Size: approx. 9 x 5 x 2cm / 3.54" x 1.96" x 0.78"_x000D_Strap Material: Cotton Fabric_x000D_Battery: 2 x AAA batteries (not included)_x000D__x000D_8 in 1 Function: _x000D_Altimeter(Range): -700 meters - 9000 meters / -2300-2950ft (resolution ratio-1m/3ft) _x000D_Barometer(Range): 350mbar-1100mbar (resolution ratio-0.1mbar) _x000D_Digital Compass: show bearing in degrees and cardinal point _x000D_Thermometer(Range): -10 Degree to +60 Degree, (Format ):F/C _x000D_Weather Forecast: Start the machine, it can forecast the weather in the next 12-24 hours, the effective range of 30-50km _x000D_LED Backlight: In any state, press any key to open the backlight, when open backlight, press any key to extend the time of 5 seconds _x000D_Clock Format: 12Hr/24Hr (AM/PM) _x000D_Battery: 2 x AAA batteries (Not Included)_x000D__x000D__x000D__x000D_Package Included:_x000D_1 x digital altimeter_x000D_1 x rope_x000D_1 x manual_x000D__x000D_Note:_x000D_1. Avoid use in rain, damp, too high or too low temperature (working temperature: 0-50, storage temperature: 20-70_x000D_2. Avoid contact with corrosive material such as perfume, alcohol, cleaning agents and so on._x000D__x000D_3. Avoid use in a area that maybe effect the magnetic compass normal use: _x000D_Near the concrete/steel structures _x000D_Close to power stations _x000D_Close to home appliances (such as computer, TV, VCD, fax machines, speakers,etc) _x000D_Close to the bridge which made from lots of steel or metal _x000D_Close to the running vehicles (cars, trains, airplane) _x000D_Near or on the surface of the metal plate_x000D__x000D_ 1Made of high quality ABS plastic material, which is durable, corrosion resistant and environmental friendly 2The device is based on the technology of electronic bearing sensor and barometric sensor 3With a rope that very convenient to carry 4For outdoor sports enthusiasts with a wide range of essential and more precise information 5Ideal for outdoor sports enthusiasts made the simple type of equipment