Robotic Tuner

I just 'miss-placed' my tuner again. I know it's around somewhere, so I won't buy a new one....

But then I saw this today: String Master Robotic Guitar Tuner Woot! It's a robotic tuner: check out the demo video at the link.

It actually has a motorized crank that turns the tuning peg as it listens to you plucking a string. Works with electric guitars, but there's an 'attachment' for acoustic guitars (which I suspect is a microphone.)

Reviews at MusiciansFriend are mainly positive, though a few negatives. For $50 it's competitive with many others tuners, so I'm really tempted...