MK-1000 54-Key Portable Keyboard by Gear4music at Gear4music
Amazon.com: Alesis Melody 54 and M-Audio HDH40 - Electric Keyboard Digital Piano with 54 Keys, Speakers, 300 Sounds, Microphone, Headphones and Piano Lessons : Musical Instruments
MK-1000 54-Key Portable Keyboard by Gear4music at Gear4music
John Pye Auctions - GEAR4MUSIC MK-1000 ELECTRONIC KEYBOARD