Function: Compass (high accuracy, high definition, clear at a glance).
Thermometer (to grasp the current temperature faster and more accurately).
High decibel survival whistle (easy to carry).
Display mode: pointer type
Sports outdoor projects: bicycle cross-country hiking camping.
Name: Professional Outdoor Multifunctional Lifeguard Whistle/Compass/North Pointer
made in China
Color classification: Army green
Carrying method: hanging button
Net weight: 16.1g