Hubertus Hazelhen calls

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Works as it should. The birds answer

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A bit thin and gets blocked when I blow it myself.

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A relevant product please whistle. The sound is soft rather than loud.

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Quite OK

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Works well.

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Good sound. I'm not sure about the usage age. This is my second whistle.

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A good basic whistle, easy to use.

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Good crank!

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Pyy will come. Better sound than the plastic whistle I tested. On the downside, when it's cold, it collects a lot of condensation from breathing, you have to suck on your breath, etc. so it doesn't affect the sound. In addition, there are several openings that must not be covered or not played - you have to hold the keys carefully. If the canton string is too wide in the opening of the tip, it will affect the tone.

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The fish with a whistle came out well.