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LK S250

| Keyboard | 61 standard size keys | 
|---|---|
| Key Lighting System | Yes (on/off) | 
| Touch Response | 2 sensitivity levels, off | 
| Maximum Polyphony | 48 | 
| Tones | Built-in tones: 400 | 
| Digital Effects | Reverb: 1 to 10, off | 
| Metronome | Beats per measure: 0 to 16 Tempo range: 20 to 255 | 
| Song Bank | Built-in songs: 60 Part off function: left-hand, right-hand, both-hand | 
| Lesson Function | Step Up Lesson (4 lesson types: EASY, LISTEN, WATCH, REMEMBER) Lesson part select (left-hand, right-hand, both-hand) Next note guide Score (evaluation points) | 
| Auto Accompaniment | Built-in rhythms: 77 | 
| Dance Music Mode | Built-in patterns: 50 Dance Music Voice: 12 | 
| Other Functions | Transpose: ±1 octaves (-12 to +12 semitones) Tuning: A4 = 415.5 to 465.9 Hz (Initial default: 440.0 Hz) One Touch Preset: 77 Sustain button LCD display (adjustable contrast) My Setup: 1 | 
| APP Function | Chordana Play | 
| MIDI | 16 multi-timbre received, GM Level 1 standard | 
| Input/Output Terminals | PHONES/OUTPUT jack: Stereo mini jack (3.5mm) MIC IN jack: Standard jack (6.3mm) AUDIO IN jack: Stereo mini jack (3.5mm) USB port: micro B PEDAL jack: Standard jack (6.3mm) (Pedal sustain, sostenuto, soft, start/stop) | 
| Power Jack | 9.5V DC | 
| Power Supply | 2-Way Power 6 AA-size alkaline batteries or AA-size rechargeable nickel metal hydride batteries, Continuous operation: approximately 8 hours (alkaline batteries), approximately 7 hours (rechargeable nickel metal hydride batteries)*, actual battery life may be shorter depending on battery type, performance style, or operation environment; AD-E95100L AC adaptor (JEITA Standard, with unified polarity plug), 30-minute Auto Power Off (Can be disabled.) 
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| Speakers | 13cm x 6cm (oval) x 2 (Output: 2.5W + 2.5W) | 
| Power Consumption | 5.5 W | 
| Dimensions | 93.0 (W) x 25.6 (D) x 7.3 (H) cm | 
| Weight | Approximately 3.4kg (Excluding batteries) |