magnetic button
磁按钮
以上为机器翻译结果，长、整句建议使用 人工翻译 。
The magnetic button has the advantages that: the magnetic flux leakage is avoided and the button has favorable magnetism.
本实用新型具有防止漏磁，并且磁性好的特点。
youdao
When not in use, it attaches magnetically to the charging port, with the barrel button serving dual purpose as the magnetic connector.
FORBES: Links 6 Feb: Microsoft's Surface Pro Reviews. Not So Good Actually
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