Panasonic introduces a Karaoke Microphone with SD-Card slot.

If you are into Karaoke this Panasonic gadget is quite cool. All the Karaoke functionality is in the microphone. The Karaoke Mic connects to a TV and that is it. The songs and image media comes stored on SD-Cards. Panasonic will be offering two models: SY-MK100 and SY-MK30. The Karaoke Micrphones also have some songs built-in.

Measurements for the Karaoke Microphone are Width 49. 8× height 274. 6× depth 49. 7mm and it weighs 198g.
The Mic connects via AV cable to a TV.
More details in this Panasonic press-release (Japanese).

There are other Karaoke Microphones, but I think none yet with SD-Card support.