If you have an HTC branded or re-badged device, it’s pretty unlikely you have a headphone jack. I know that I’d like to listen to music on my Dash occasionally, but I’m not always in a place where I can do that on the external speaker. Country music isn’t tolerated much in these parts; then again, we are north of the Mason-Dixon!
This 2-in-1 mini USB jack plugs right in to your device and provides the elusive 3.5mm jack plus a mini USB port so you can still charge and sync. This ought to work with the TyTn, Hermes, Excalibur and many other HTC devices, plus you can’t beat the price of $4.99!