Rhythms/Patterns (100 built-in rhythms)::Lesson Function (Melody on/off (Lesson part: Melody part))::Key Transpose (12 steps (-6 to +5 semitones))::Tuning Control (A4 = approximatery 440 Hz ± 50 cents)::Speakers (10cm x 2)::Amp Output (1.6W＋1.6W)::Input/Output Terminals (Headphones/output (standard stereo jack), External power (9.5V DC))

​​​​​​​Casio CTK-240 Portable Musical Keyboard Piano

• Product Type: Portable Keyboard
• Series: Standard
• Action: Non Weighted Keys
• Control Panel: Digital
• Key Type: Lever
• Keyboard Type: Velocity Sensitivity
• Number of Key: 49
• Control Button Type: Volume Control::Rhythm Control::Tone Control::On/Off Button
• Built-in Speakers: Yes
• Built-in Amplifier: Yes
• Display Type: LCD
• Case Included: No
• Stereo Input: Yes
• MIDI Port: No
• Microphone Jack: Yes
• USB Cable: No
• Tones: 100
• Polyphony Tones: 12
• One Touch Preset: No
• Number of Presets:
• Number of Songs: 50
• Instrument Sounds: 100
• Octaves: 4
• Accompaniments: Yes
• Number of Effects: 0
• Equalizer: No
• Sound Recording: No
• Power Source: AC::Battery
• Battery Included: No
• AC Adapter Included: No
• Power Requirement: 6 AA-size alkaline batteries or AC adaptor
• Power Consumption: N/A