Either size can support stereo sound and/or a microphone, depending on the number of separate connector rings on the plug and jack. 2.5mm refers to the approximate diameter of the connector.

and made the connector easier to manufacture in the huge numbers that would be needed for a system-wide conversion. Molding the plug body also meant that strain relief would be integrated into the ...

The plug and socket that provides charging ... Called a "mini-phone connector," the 3.5mm headphones jack has been an analog headphones standard on billions of devices for decades.

A reversible 8-pin plug and socket for Apple mobile ... when Apple eliminated the 3.5mm earphones jack, a standard since the 1950s (see mini-phone connector). THIS DEFINITION IS FOR PERSONAL ...

It can support stereo and/or microphone, depending on the number of separate connector rings on the jack. Some phones offer only a 2.5 mm jack, which is a smaller variety of the same principle.

The 3.5mm headphone jack is an industry standard audio plug. Most commonly used for connecting ... Dependent on the number of connector rings, headphones can also include a microphone.