Dedicated sound in the speaker for low battery, switch on, switch off, pairing, volume adjustment, voice activation, reconnection request, waiting call….
专用音议长低电池，开关，关掉，配对，音量调整，语音激活，重新请求，请等待… … 。
Dedicated sound in the speaker for low battery, switch on, switch off, pairing, volume adjustment, voice activation, reconnection request, waiting call….
专用音议长低电池，开关，关掉，配对，音量调整，语音激活，重新请求，请等待… … 。
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