The plug size of Bluetooth headphones is usually the same as the plug size of ordinary headphones, usually 3.5mm or 2.5mm two sizes. These sizes are suitable for the headphone jack on most devices such as phones, tablets and laptops.
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The 3.5mm plug is the more common type of headphone plug, which has a thicker metal pin and is suitable for most devices. This plug can provide better sound quality and more stable connection, while suitable for a variety of different devices.
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The 2.5mm plug is usually used for smaller devices, such as smartphones and tablets. This plug has a thinner pin, so it is easier to insert and remove the headset.
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In addition to these two common plug types, there are some other types of plugs, such as USB plugs and wireless plugs. But these plugs usually don't work on all devices and require device-specific support to work.
Just a hint. Don't charge Bluetooth with the fast charger.
I found using the computer's usb with a small Bluetooth device around 200 mah. 5 volt interface charging is more stable. Use the power bank sparingly. Others with Bluetooth sports headphones.
It is recommended to find a plug with an output of about 500ma to charge. If you don't have the right one. Just plug it in and charge it.