Essential for hikers, campers, maritimes sports enthusiasts, and professional rescuing teams requiring dependable emergencies signaling equipment during critical situations Crafted from with waterproof construction, this pennywhistle features integrated lanyard and pre programmed pattern for crisis communication 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 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 standards with portability, offering readiness as a vital component of survival kits and configurations, Manufacturer: Pocoiau