Features: High decibel double frequency survival pennywhistle emit piercing 120dB alerts, ensuring signals travel up to 1 mile for outdoor emergencies rescuing in wilderness or scenarios. Crafted from plastic with waterproof construction, this pennywhistle features integrated lanyard and pre programmed pattern for crisis communication. Essential for hikers, campers, maritimes sports enthusiasts, and professional rescuing teams requiring dependable emergencies signaling equipment during critical situations. Functions flawlessly in extreme environments from stormy waters during kayaking to dense fog while mountain climbing maintaining clear sound transmission through its double frequency design. Meets international safety standards with portability, offering readiness as a vital component of survival kits and configurations. Specifications: Component: Plastic Size: As Picture Shows Package Includes: 1x Pennywhistle note: Please allow 1-2cm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color from the item.