Specifications:
Material: ABS
Color: Black
Size: approx. 9 x 5 x 2cm / 3.54" x 1.96" x 0.78"
Strap Material: Cotton Fabric
Battery: 2 x AAA batteries (not included)
8 in 1 Function:
Altimeter(Range): -700 meters - 9000 meters / -2300-2950ft (resolution ratio-1m/3ft)
Barometer(Range): 350mbar-1100mbar (resolution ratio-0.1mbar)
Digital Compass: show bearing in degrees and cardinal point
Thermometer(Range): -10 Degree to +60 Degree, (Format ):°F/°C
Weather Forecast: Start the machine, it can forecast the weather in the next 12-24 hours, the effective range of 30-50km
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
Clock Format: 12Hr/24Hr (AM/PM)
Battery: 2 x AAA batteries (Not Included)

Package Included:
1 x digital altimeter
1 x rope
1 x manual

Note:
1. Avoid use in rain, damp, too high or too low temperature (working temperature: 0℃-50℃, storage temperature: 20℃-70℃）
2. Avoid con tact with corrosive material such as perfume, alcohol, cleaning agents and so on.
3. Avoid use in a area that maybe effect the magnetic compass normal use:
Near the concrete/steel structures
Close to power stations
Close to home appliances (such as computer, TV, VCD, fax machines, speakers,etc)
Close to the bri dge which made from lots of steel or metal
Close to the running vehicles (cars, trains, airplane)
Near or on the surface of the metal plate