FEATURES:
A high quality cable commonoly used with cell phones and pda units.
A 2.5mm plug to 2.5mm plug stereo interconnect cable for connecting together two micro stereo phono ports.
This is not commonly used for an extension. An extension will have male to female ports.

SPECS:
A 2.5mm male to male cable. Plug to plug connectors. Color: Black Length: 6 feet

Note:
This cable features a 2.5mm plug, which is NOT standard headphone jack size. A standard headphone jack is 3.5mm. 2.5mm connectors are commonly found on cell phones and PDAs. Compatible only with 2.5mm TRS plugs (the ones without a mic conductor, whcih is the third black ring on the plug).