Features: Emergency Safety Whistle: This high-decibel survival whistle is designed for emergencies, producing an extra loud sound to alert rescuers during hiking, camping, or other outdoor activities. Outdoor Safety Whistle: Featuring a compact and lightweight design, this whistle is easy to carry and ensures reliable performance in critical situations during outdoor adventures. Reliable Emergency Signaling Tool: With its loud and clear sound, this whistle is an effective signaling device for survival scenarios, making it a vital addition to any outdoor safety kit. Perfect For Hiking Boating: Designed for outdoor enthusiasts, this whistle is an essential safety tool for hikers, boaters, and campers to ensure quick assistance in emergencies. Intimate Service: We are committed to providing customers with high-grade after-sales service. Whether you have any questions,you can contact us, and we will solve them for you until you are satisfied. Specifications: Material: Brass Length: 4cm Note: Due to the screen lighting effect, the actual color of the product may be slightly different. Due to manual measurement, please allow size error. Include: Choice1: 1*Whistle OR Choice2: 2*Whistles