The Plantronics MO300 QD to 3.5 mm Adapter for the Apple iPhone & Blackberry Phones for use with any Plantronics headsets

*NOTE: Also compatible with: Any cell phone equipped with a 3.5mm stereo headset jack. Here are just a few:

Apple
Apple iPhone

Blackberry
Blackberry 8120  / Blackberry 9000  / Bold Blackberry Tour 2 9650
Blackberry Bold  / 9780 Blackberry Curve 8520 Gemini /Blackberry Curve 8900 Javelin
Blackberry 9700 Bold Onyx / Blackberry Pearl 9105 3G / Blackberry Pearl 8120
Blackberry 9100 Pearl / Blackberry Storm 2 9550 / Blackberry Torch 9800

HTC
HTC 7 Mozart / HTC 7 Pro / HTC 7 Surround
HTC Aria / HTC Desire Android / HTC Desire HD
HTC Desire Z / HTC Dream / HTC Droid Eris
HTC Incredible ADR6300 / HTC Google Nexus One / HTC Google Nexus One
HTC Gratia / HTC HD Mini T5555 / HTC HD2 T8585
HTC HD7 / HTC Hero Android A6262 / HTC Legend A6363
HTC Magic / HTC MAX 4G / HTC Merge
T-Mobile G2 Android Smartphone

Motorola
Motorola A855 MileStone / Motorola MILESTONE XT720

Samsung
Samsung B7300 OmniaLITE / Samsung B7320 Omnia Pro / Samsung I8700 Omnia 7
Samsung i8910 Omnia HD / Samsung I9000 Galaxy S / Samsung Vibrant T959

Sony Ericsson
Sony Ericsson Satio U1 / Sony Ericsson XPERIA X10 mini pro / Sony Ericsson XPERIA X10
Sony Ericsson XPERIA X10 mini E10

T-Mobile
T-Mobile G1 Android HTC Smartphone Bronze / T-Mobile G1 Android HTC Smartphone Bronze (unlocked) / T-Mobile G1 Android HTC Smartphone White