Portable multi-audio whistle, different blowing can make different sounds, more recognizable. Made of high-quality plastic, lightweight and easy to carry, easy to use. The whistle comes with a lanyard to secure the whistle for easy movement. Well-polished, comfortable grip, portable and compact. When traveling outdoors, avoid getting lost and find companions. Can be used for various activities, field survival, military training, etc. Made from abs material, measuring 2.75*1.06 inches, this custom tri-frequency outdoor survival whistle. Usage Scenarios: Office supplies, school stationery, corporate promotions, trade show giveaways. Tailored branding: Supports logo imprint and design personalization. Product Highlights: Portable, durable, practical for daily use.