Features:
1. Whistle sound is crisp and loud.
2. Transmission distance is far for calling for help, recruiting companions and outdoor activities.
3. It can be hung on tents, equipment, water bottles, backpacks, key rings and other accessories.
4. Wearable, practical and convenient.
5. High frequency double tube survival whistle.

Specification:
Size: 5.5*1.5*0.8CM
Peak volume: 120dB
Material: Aluminum alloy
Weight: 10g

Package Included:
1pcs Whistle