Outdoor High-decibel Stainless Steel Self-protection Double Tube Survival Whistle with Key Ring

1. The shape is simple and generous, streamlined design, easy to blow.
2. Double-hole double-tube design, seamless connection to the sound tube, volume up to 150 decibels, can be used for outdoor and emergency situations.
3. With alloy chain ring, it can be hung in any convenient place.
5. Material: 440 stainless steel.
6. Product length: 50mm.
7. Product width: 15mm.
8. Product thickness: 8mm.
9. Net weight of the product: 19.5g.
10. Key ring diameter: 2.5cm.
11. Chain + key ring: 5cm.