Features: 1. Wonderful function &compact design 2. The keyboard can be rolled up， very convenient to carry and store 3. You can paly it anytime anywhee 4. 100 different rhythm options 5. The keyboard toch sensitive mat 6. 128 different tone functions 7. 40 demo songs(see demo song list attachment) 8. Weight:38oz 9. Material :metal rubber 10.LCD indicator 11.You will be impressed not only by its compact size and light weight body， but also by its superior sound quality 12.Built-in stereo speaker system which is good for concert 13.You can connect headphones which is good for quiet practice (headphone not include) 14.Ideal for children beginners， music enthusiast， professional players， or people on the goSpecifications: Material: rubber Keys: 49 keys Tones: 128 tones Demos: 40 demo-plays Size: main body:9.6*22.8*3.3cm (L x W x H) keyboard :72*17.8*0.5cm Battery: 4 x AA batteries (not included)Package: 1 x 49 keys soft roll up keyboard piano 1 x instruction manual