长按启动 Air by crazybaby (NANO) 后，在连接设备之前，分别双击左右耳机 LOGO 键。
进入耳机配对状态，同时 LED 灯环会快闪三次，耳机自动配对。
配对成功后，LED 灯环变为每 5 秒闪烁 2 次。
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