Multifunctional:
- Standard military loud whistle (patented design, sound travels farther and clearer);
- Compass: high accuracy;
- Thermometer;
- Survival reflective signal mirror;
- Fire starting magnifier: Focus sunlight to the leaves to start fire;
- High brightness white light LED flashlight: can work for 10000 hours;
- Sealed storage compartment: Write down your name, address, phone number, blood type on paper before travel and then put it in the compartment, so that the life guards can get your information quickly.