N.B. Product made for the Japanese market, you buy it
being aware of the fact and at your own risk, no warranty 
outside Japan, all info is in Japanese only.
Brand new.
Approximate translation, in bad English, of some product info, without
assurance that it is all correct :
[Super Compatibility]: Cable or Bluetooth music playback while karaoke
 etc. There is no use. So you can enjoy karaoke anywhere, with Bluetooth
 (Android/IOS) connection to the cell phones, tablet PC can and more.
 Makes a great gift for your friends.
[Earphone Jack included] earphone jack because it comes with a
 earphone, around noisy places but you can concentrate and tell you but
 practice singing songs.
Supports TF card [Features]: TF card (max. up to G) in the United
 States. Once, You can insert TF card and download in advance. It
 instantly to sing or play your music on the go. (Note: TF card is not
 included. (Not included)
[Effect]: Channel Stereo Headphone, stunning KTV live sound, echo echo
 Zankyo sensations for a more clear music rhythm provides the highest
 quality chip set.
[Portable and convenient. You can enjoy the wireless microphone]: High
 Sound Quality without having to go for condenser microphone is perfect
 for KTV, home and home party or camping and karaoke. To remove the big
 success as well. This end-of-year, New Year party, such as parties and