Casio LK-S250 61 Keys Portable Keyboard Piano

With the LK-S250 you can enjoy music whenever and wherever you like. Its compact size of 930 mm x 256 mm x 73 mm is 30% smaller in volume than the LK-265 and LK-266 models, and it boasts roughly 16 hours of alkaline battery life*. With a grip at the top of the keyboard and a weight of only 3.3 kg, it couldn’t be easier to carry. The design incorporates rounded edges and corners, making it safely portable.

Specifications:

Number of Keys: 61
Touch Response: 2 sensitivity levels, off
Number of Tones: 400
Number of Rhythms/Patterns: 77
Automatic Accompaniment: Yes
Built-in Songs: 60
Speaker: [13cm x 6cm (Oval)] x2
Amplifiers: 2.5W + 2.5W
Power Supply: 
 2-way
  [Batteries] 
   AA-size alkaline batteries x 6
   Approximatery 8 hours
  [AC Adaptor]
   AD-E95100L (DC 9.5V)
Power Consumption: 5.5W
Effects: Reverb (10 types, off)
Transpose: -12 semitones ~ 0 ~ +12 semitones
Tuning Control: A4 = 415.5 Hz ~ 440.0 Hz ~ 465.9 Hz
One Touch Presets: Yes
Metronome: 0 to 16 beats; tempo range: 20 to 255
Connection to App: Yes (CASIO MUSIC SPACE)
MIDI: Yes (Using the USB port): GM level 1 compatible