商品规格： 长6.3cm，直径8mm

'产品介绍'：狗口哨是呼叫狗的最有用的小工具之一，长笛吹我们的不同的产品。狗口哨将是一种人耳不易察觉，但狗是非常明显的超声波。因为耳朵的声音可以接收120 kHz，大多数人可以听到20 kHz。狗狗除了可以发出人声外，可以在外面听到声音，也听不到声音，只有狗才能听到频率，超声频率传播得很远，所以狗可以听到远处的声音。使用狗的专业知识来制造狗口哨，你可以抓住猎物逃离狗容易回叫。

'用法'： 松开声波调节螺丝。侧面从入口到空气，同时旋转调节杆，达到最佳间距。调整杆拧紧后，拧紧声波调节螺丝。请注意，这里最好的音调不是最大的声音，但你的狗是最敏感的声音，我们只能注意普通观察可以得到哦！

Commodity specifications: length 6.3cm, diameter 8mm

[product introduction]:a dog whistle is one of the most useful gadget to call the dog, the flute is blowing it with our different products. Dog whistle will be a kind of human ear is not easy to detect but the dog is very obvious ultrasonic. Because the sound a dog's ears can receive 120 kHz, and 20 kHz at most people can hear. While dogs can send the human voice in addition to flute tube could be heard outside, also the sound is inaudible, only dogs can hear the frequency, the frequency of ultrasonic spread very far, so the dog could hear it in the far place. Use of the dog's expertise in the manufacture of a dog whistle, you can catch the prey running away from the dog easy to call back.call back.

[usage]: loosen the sound wave adjusting screw. Side from the air inlet to the air, while the rotation of the adjusting rod, to the best pitch. After the adjusting rod is screwed, the sound wave adjusting screw is tightened. Note that the best pitch here is not the most loud sound, but your dog is the most sensitive to the sound, which we can only pay attention to the ordinary observation can get oh!