Aluminum Emergency Survival Whistle,21 Pieces Outdoor Safety Whistle Extra Loud Key chain for Hiking Camping Training Outdoors Sports

Quality material：The whistle is made of high quality aluminum alloy,surface anti-oxidation treatment, no fading, no rust and durable， waterproof, rust-proof, can be used for a long time. Easy to use and carry:This aluminum whistle is small and portable, 4.7 cm/ 1.85 inches in length, diameter of the these whistles is approx 0.9 cm/ 0.35 inches with a key ring ,compact and strong, elegant personality, can be hung on the key ring as an ornament, portable design, easy to carry around. Loud whistles:The notch design of the whistle increases the vibration frequency of the air, the high frequency is louder , and the transmission distance is long, very useful for various emergency situations; During outdoor travel, you can confirm the direction for you, avoid getting lost, find companions, etc. Multi- purpose : Emergency tools aluminum safety whistle for a variety of occasions,not only suitable for emergency situation in sporting events,such us camping,hiking, boating,hunting,but also used as referee coaches whistle for tournament,or pet training. After-sales service: Each product undergoes quality inspection before being sent to the Amazon warehouse. If you have any questions, please contact the seller first, and we will actively solve it for you! Thank you for your support and wish you a happy shopping.