At the end of the tie has a small, almost invisible buttons, press, have the function of diving, according to two times.
在领结的末端有一个小的几乎看不见的按钮，按一下，就有潜水的功能了，按两下。
At the end of the tie has a small, almost invisible buttons, press, have the function of diving, according to two times.
在领结的末端有一个小的几乎看不见的按钮，按一下，就有潜水的功能了，按两下。
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