iPhone 4 with the Black Diamond app enabled, and you get a funky sound sensitive mood lamp. On top of that, the dock also charges up your iPhone while it shows off its colors, and somewhere at the bottom there's some black magic that channels out amplified audio from the phone, although actual speakers would be even nicer.
Ultimately, Yantouch sees the Black Diamond as a developing platform for potential applications like an outdoor temperature indicator, or some sort of caller ID color tagging tool for seeing from afar who's calling. If all goes well, Yantouch will even consider making an Android version, but we're not sure if the $79 price tag will immediately catch on. Anyhow, check out our hands-on video after the break.