I just bought the Voice Control device for my headunit.
If you own the Pioneer AVIC-N1 or AVIC-N2 DVD/navigation receiver, you know just how powerful it is. And now you can up the utility quotient by adding the Voice Command Pack to it. The Pack lets you control the navigation functions of the receiver simply by speaking. On-the-fly adjustments have never been easier — and safer.
The Pack features a wired microphone that plugs directly into the AVIC-N1 or AVIC-N2, plus wire guides and a microphone stand/clip. You can clip the microphone to your sun visor, mount it on the steering column (behind the steering wheel), or place it anywhere that provides it clear reception (as long as it doesn't interfere with vehicle operation). The self-adhesive wire guides keep the microphone's wire neatly tucked away for a clean installation.
Also included is a wireless remote that mounts conveniently on your steering wheel (the mount is included, too), along with installation and operation instructions. Warranty: 1 year.