Введение
Look into a High-end true wireless earphone.
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In this cavity, there is a speaker unit and a logic board.
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The newly designed 9.2mm speaker unit is protected by a transparent cover.
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RED: EMERALD 4.1 BAS200100
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Orange: 3460 3 K AWBX
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Sky blue: CTD L2B
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Green: 20401 ZOORD
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Battery was located in a definite different space to the logic board.
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If you want to change the battery, you have to open the cavity behind.
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