The T-Mobile Wing Pocket PC Phone uses an 11-pin miniUSB connector for wired headphone and headset connections. Unfortunately, this jack doesn't allow you to use standard 3.5mm headphones with the Wing.
The BoxWave Stereo Converter/Adapter allows you to use any headphones, earphones or earbuds you wish with the T-Mobile Wing.
AnyCOM BSH-100 Bluetooth Headphones w/ Microphone
The BSH-100 Bluetooth Stereo Headset from AnyCOM is two wireless devices in one. If you want to enjoy full stereo audio playback from your Windows Mobile Pocket PC or Smartphone, the headset supports stereo output via A2DP. Want to make a phone call? No problem. The BSH-100 also has a microphone attachment for voice calling support.
Features comfortable earpads, a foldable design for easy storage, onboard Play/Pause/Answer/End controls, a removable, rechargeable battery pack, up to 12 hours of playback or voice calling per charge, a standby time of 200 hours and more.
iMuffs Bluetooth Headphones w/ Microphone
Although designed with Apple's iPod in mind, the iMuffs from Wi-Gear are perfectly suited for use with Windows Mobile Pocket PCs and Smartphones. The iMuffs are stereo audio behind-the-neck headphones with support for A2DP Bluetooth audio, but also feature a built-in microphone for use as a Bluetooth hands-free headset. Clear Voice Capture (CVC) technology helps reduce echo and noise distortion.
The iMuffs have Play/Pause/Forward/Back controls and ship with a miniUSB charger for the headphones. The iPod adapter (included or optional depending on the package) takes power from any Dock Connector iPod. Available in Black or White (shown).
Etymotic ety8 Bluetooth Earphones
If money is no object and you want to enjoy the best sound with the smallest footprint, take a look at the Etymotic ety8 In-Ear Bluetooth Earphones. The ety8 earphones are connected with a wire, allowing you more positioning options than the headphones shown above.
The ety8 are A2DP ready and work with any compatible Bluetooth device including Windows Mobile Pocket PCs and Smartphones. Includes charger, leather case and additional eartips. An iPod adapter (included or optional depending on the package) takes power from any Dock Connector iPod.