One earphone output 耳机输出接口
If you have to listen to something when you're out, use only one earphone or play it at a very low volume.
如果你必须在外出时听一些东西，只使用一个耳机或把音量调小。
Accessory:Two batteries one charger, One earphone, OneUSB cable.
标配：双电池，一个充电器，一个耳机，数据线等。
I always use earphone in one ear, to keep another one can listen other sounds.
我通常耳机只带一个耳朵，就是为了可以让另一只耳朵可以听到别的声音。
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