aluminum alloy outdoor dual-frequency whistle outdoor mountaineering outdoor survival whistle equipment wholesale

Material: Hard Aluminum Alloy
Color: Silver, Gold, Black, Customizable
Surface treatment: hard oxidation
Specification: Length 56mm * Width 15mm * Thickness 8mm
Packing: OPP Bag
Case Pack: 2000/case
Weight: 10g
Function:

1. Personality whistle design, the overall style is novel with high-frequency high pitch, easy to blow and loud.
2. The dual-hole design can emit sound levels of 80-120 dB, ensuring performance even in harsh environments.
3. Aluminum alloy material, safety, high performance, overall reflects a tough outdoor style.
4. Carefully designed incision allows for higher air vibration, resulting in a more powerful and louder sound, capable of reaching farther.
5. Compatible with key chains, lightweight, convenient to carry and use.

Direct from the factory, prices are genuine.Honest management, customer trust.Quick and Customized Product, Quality Assurance.