This outdoor survival whistle is designed with triple frequency sound output, ensuring high-pitched and high-decibel alerts for emergencies. Its durable construction and lightweight design make it ideal for outdoor activities like hiking, camping, and kayaking. The whistle provides reliable signaling in life-saving situations, enhancing safety during adventures. Features -Color:Olive Green -Material:ABS -Size:7.10X2.80X1.00cm/2.79X1.10X0.39in -High decibel sound: designed with highpitched frequencies, this whistle ensures your signal is heard even in noisy outdoor environments or during emergencies -Wide signal coverage: emits a powerful sound that travels long distances, making it ideal for rescue situations in vast outdoor areas -Durable and weatherproof: built to withstand harsh weather conditions, including rain and wind, ensuring reliable performance in any environment -Compact and lightweight: easy to carry and store, this whistle is practical for hiking, camping, and other outdoor adventures -Multipurpose tool: suitable for professional rescue operations and personal emergency preparedness, offering versatile functionality Package list: 10PCS x survival whistle