登山に使用、音の大きさは期待程有りませんでした。 Read more

The is awesoem whistle Read more

Excelente me gustó 👌 lo recomiendo Read more

Ich benutzte die Pfeife beim Fahrradfahren. Ich habe festgestellt, dass sich die Leute bei einer Pfeife weniger erschrecken als bei einer Klingel. Die Lautstärke lässt sich gut dosieren, aber wehe es soll laut sein! ;-) Read more

+++ TRES BIEN +++ Read more

Ear busting Read more

Suena muy fuerte lo podré utilizar en múltiples actividades Read more

This whistle is not your average sports whistle; it is super loud and has a range of up to 2+ miles, an impressive eight times the range of an ordinary whistle. One of the standout features of the HyperWhistle is its incredible sound output. A sound pressure level (SPL) of up to 142dB is eight times louder than your typical whistle. This makes it perfect for various situations, whether boating, attending sporting events, ensuring life safety, camping, hiking, or even police use. The durability of this whistle is also worth noting. It is built to withstand all weather conditions, making it a reliable companion no matter the environment. Whether it's raining, snowing, or even underwater, the HyperWhistle will continue to function flawlessly. I also appreciate the attention to detail in the design of this whistle. Its unique radial tri-frequency design ensures that the sound is carried efficiently and effectively, allowing it to be heard from a distance. Additionally, the whistle is naturally buoyant, adding an extra layer of convenience for water-related activities. The HyperWhistle comes with reusable hearing protectors, which is a thoughtful addition. This ensures that you can protect your ears while still enjoying the powerful sound of the whistle. The easy clip-neck lanyard is also a handy feature, allowing you to keep the whistle within reach at all times. It's worth mentioning that the HyperWhistle is a patented design (US8925478), which speaks to its uniqueness and quality. Read more

Merci ,exvcellent article Read more

Se agradece los tapones de oidos. Si nivel de sonido es excelente y facil de escucha a más de 500 mts. Read more

Do not buy it at all. 100 times cheaper whistles are much better than this. Read more