HTC Stereo Headset with Microphone and Push-To-Talk button for Pocket PC Phones

Rating:
Summary: it is 2.5mm plug-in
Review: Nice stereo headphone, but it works fine most time only with HTC OEM PocketPC phone, not HP iPAQ H6315 which uses 3.5mm plug-in. Be careful. I returned mine.

I even tried on other regualr cell phone, the push button is not working normally.