Ultimate Survival Compass with 10 Functions – Humidity Meter, Thermometer, Whistle, LED Flashlight, Igniter, Level Gauge – Perfect for Hiking, Camping, and Outdoor Adventures

1) Thermometer: Measure of ambient temperature.

2) Hygrometer: Measure for ambient relative humidity

3) LED light: Lighting(Replaceable battery–step to battery

a)take out the magnifler and ruler.b)loosen three screws.c)change battery

4) Reflector: Call for help in countryside,reflect sunlight to sent out the light signal.

5) Spirit level: Determine level condition

6) Compass: Measure for magnetic azimuth(relative functions of compass:acquire data at horizontal and verticall level)

7) Whistle: Call for help in countryside,sent out the sound signal.(use tappet to push out the whistle from the third hole the left side)

8) Flint: Wilderness Survival by make fire.(use tapple to push out the flint from the second hole at the left side)

9) Magnifier: Find a coordinate on a map

10) Ruler: Measure a distance