Agreed. 1. The interface of most Bluetooth headphones is USB interface, as long as the phone charger interface and Bluetooth headset charging interface want to meet.
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2.USB, is the abbreviation of English Universal Serial Bus (Universal serial Bus), and its Chinese abbreviation is \"through the line\
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3, the next generation of USB interface will be changed direction, the next generation of Type-C USB interface, can support positive and negative plug, and transmission data signal is strong, but the current (2014) manufacturers are limited.
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Because your mobile phone charging needs more than 2.1 amps of current to drive, if it is 1A port, because the internal resistance of the charging treasure is too large when charging, resulting in the output voltage becomes smaller, the corresponding current is also smaller. I can't flush the electricity.