Outdoor Whistle Plastic Multifunctional 3-In-1 Whistle Survival Whistle Compass

Outdoor Whistle Plastic Multifunctional 3-in-1 Whistle Survival Whistle Compass Thermometer Whistle Referee Whistle

Function introduction: The survival sentinel is not just a tool to be used in case of distress, it can also be used for communication, simple communication and orientation. In outdoor adventures, hiking, hiking, camping and other activities, survival posts can help you quickly signal to get in touch with teammates or rescuers. Characteristics and advantages ‌ Lightweight and portable ‌ : Survival sentinels are usually small and fitted with clasp, making them easy to carry in a backpack, key chain or wearable device without adding too much burden to your bag. ‌ Loud ‌ : Survival whistles usually have a frequency of more than 3,000 Hertz and a sound of more than 120 decibels, ensuring that they can be heard clearly in open areas or noisy environments. ‌ durable material ‌ : generally made of aluminum alloy and other high-quality materials, the surface is treated with anodic oxidation technology, does not fade and long service life. ‌ versatility ‌ : Some survival posts have been integrated with compasses, thermometers and even flint