Compass Survival Whistle Two-for-one Tube Wilderness Adventure

No ball bearing double tweeter. Light weight, high strength, sound crisp and loud, up to 120 decibels
Double hole whistle core design. Thickened tube wall, sound crisp and loud
Hanging hole design for outdoor carry-on. In case of emergency/danger, blow the rescue signal
CNC finishing, buckle body molding
Titanium is strong and not easy to break titanium is light and weightless titanium is waterproof and does not rust