The Casio LK280 61-key lighted USB keyboard is the perfect instrument for beginners who want to learn the keyboard. The LK280 includes a Step-teaching function to get great instruction from the very beginning. The Step Lesson"s songs are separated into smaller phrases that are easy for anyone to understand and recreate. The keyboard will have you play a phrase of music and when that phrase is mastered you are ready to advance to the next phrase. After completing phrase after phrase you will find that you have learned to play a whole song, one section at a time. Talk about an effective teacher, this keyboard has lighted keys that show you where to play next and will also call out the number of what finger needs to play next in a simulated voice. The LK280 keyboard also has touch responsive keys that aid in learning for beginners plus it has 152 built in songs including 50 songs for practice that allow you to start learning right away. It also has 600 built in tones, a 5 song recorder, digital effects and a mic input to open up huge possibilities. It also features a USB port that allows you to rock out with popular music software or you can use it to convert your LK280 into a stereo speaker system for a MP3 player. Number of the key: 61Keys Keyboard size: Piano type standard size with key lighting system Touch Response: 2 sensitivity levels, Off Sound Source: AHL Maximum Polyphony: 48 notes MIDI: GM Level 1 compliant Key Transpose: +/- 1 octave (-12 to 0 to +12 semitones) Tuning Control: A4 = 415.5 - 440.0 - 465.9Hz Scale tuning: 16 patterns Tones: Number of built-in tones: 600 Stereo sampling piano tone: Yes Layer: Yes Split: Yes Octave shifter: Yes Piano/Organ switching button: Yes Sampling system: MIC in / Sampling Sampling tone: Maximum 5 sampled tones + maximum 3 sampled drum tones set (Maximum recording time: Total 10 seconds) Digital Effects: Reverb: 10 types Chorus: 5 types Auto harmonize: 12 types Arpeggiator: 90 types Built-in rhythms: 180 patterns Number of one touch preset: 180 Number of music preset: 305 Song Bank: 152 songs (including 50 practice songs) Metronome: 0, 2, 3, 4, 5, 6 beats (adjustable tempo: 30 to 255) Chord Book: Yes Recorder: Recording system: Yes Lesson song: 1 : RH, LH, RL User"s performance: 5 songs : 6 trucks Size: Approximately 12,000 notes (Total 6 songs) SD memory card: Supported memory cards: Up to 32GB (SDHC applicable) SMF playback: Maximum 999 songs / SMF (format 0,1) CM2 Save: User"s recording songs, sampling tones, sampling drum tones and all data Load: User"s recording songs, sampling tones, sampling drum tones and all data Delete: Yes Format: Yes Data access function : Song expansion (saving to main board): Maximum 10 songs SMF format 0, 1) Sampling tones: Maximum 5 tones Sampling drum tones: Maximum 3 tones Recording songs: Maximum 5 user"s songs + Maximum 1 lesson song All data registration: Yes Shared memory: Data: Expansion songs, sampling tones, sampling drum tones and SD memory card play back songs Size: Approximately .320Kilabyte Number of demonstration song: 102 songs loop playback Auto-start demonstration: Yes Display Screen: LCD size: 129x44mm I-con: Common I-con design Input/Output Terminals: USB port: Yes SUSTAIN/ASSIGNABLE jack: Yes PHONES/OUTPUT jack: Yes AUDIO IN jack: Yes MIC IN jack: Yes (MIC volume on back) DC IN jack: 9.5 Volt Speaker size: 12centimeter x 2 Speaker output: 2.5W+2.5W Power: DC 9.5 Volt (D size batteries x 6) Included Accessories: AC Adapter Music stand Music book