• Material: ABS high strength anti-drop high temperature engineering material.
• Ideal for outdoor sports camping, hiking, etc.
• Standard military regulations high-decibel to find out the whistle (patented design of the sound of the warehouse makes the whistle farther and more harsh).
• Refers to the North (South) needle (high accuracy, clear at a glance).
• High precision thermometer (faster and more accurate the first time to grasp the current temperature).