- br br Casio CTK-2100 61 Key Personal Keyboard Premium Package - Top Deal Reviewbr br Product Featuresbr Easy-to-play keyboard 61-key portable keyboard with wide range of tones, rhythms and learning capabilitiesbr Premium package includes professional closed-cup headphones, single x-braced stand, and World Tour brand power supplybr 400 high-quality tones, 150 rhythms and auto accompaniments for Latin musicbr Voice Pad allows you to play sampled sounds; connect CD or MP3 player for practicing along with favorite songsbr Powered by 6 AA batteries or included AC adapter