TL690 the foldaway FM/AF numeral demonstrated the wireless earphone uses the electromagnetism trade technology as the electroacoustical transformation way.
TL690折叠式FM/AF数字显示无线耳机采用的是电磁换能技术作为电声转换方式。
TL690 the foldaway FM/AF numeral demonstrated the wireless earphone uses the electromagnetism trade technology as the electroacoustical transformation way.
TL690折叠式FM/AF数字显示无线耳机采用的是电磁换能技术作为电声转换方式。
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