1. This outdoor seven-in-one multi-functional whistle is designed for outdoor enthusiasts, integrating a variety of practical functions. 2. It is not only a high-decibel survival whistle. In case of an emergency outdoors, it can emit a loud sound to effectively attract others' attention, adding a sense of safety. Meanwhile, it is also equipped with a portable flashlight, which can illuminate your way in the dark or at night. 3. The whistle comes with a compass, which can help you identify directions in the wild and avoid getting lost. The thermometer is also a considerate design, allowing you to keep track of the outdoor temperature changes and make preparations in advance. 4. This product is measured by pieces. It is small in size and easy to carry, so you can easily take it to any outdoor place. Whether you are hiking, camping, mountain climbing or engaging in other outdoor activities, it can be your reliable companion. This whistle is suitable for a variety of outdoor scenarios, providing all-round support for your outdoor journey.