Specification: Waterproof / Water-Resistant: Yes. Use: Pointing Guide. Outdoor Activity: Camp. Model Number: Compass Watch. Material: ABS plastic. Dial Display: Pointer. Color: army green. Size: 8*4*2.5cm. Weight: about 60g/2.12oz. Quantity: 1pc. Multifunction: 1. Thermometer: Measure the ambient temperature. (-20-60 ° C). 2. Hygrometer: Measure the relative humidity of the environment. 3. LED lights: convenient for you to use at night. Replace the battery: (1) remove the magnifying glass and ruler (2) loosen the three screws (3) replace the battery. 4. Reflector: Ask for help in the countryside, reflect the sun, and send a bright signal. 5. Spirit level: determine the level condition. 6. Compass: Measurement of magnetic azimuth (the relative function of the compass to acquire data at the horizontal and vertical levels.). 7. Whistle: Call for help in the countryside, send a signal, (use the tappet to push the whistle from the third hole on the left). 8. Magnifier: Find a coordinate on the map. 9. Ruler: Measuring distance. Package includes: 1 × Multi-function Compass