88 keys (like on a real).
A score of sounds with little variation possible thanks to the effects.
Split the keyboard, possibility to play two sounds simultaneously.
Ability to save sequences to play over ...
No amplifier but do not bother for mobile use.

But first a real piano approach.

UTILIZATION

Good touch, imitation of a real keyboard very good compared with the competition (study from the summer 2004).
Very easy to use. Possibilities for use midi master keyboard.

SOUNDS

His great Piano1 Yamaha very crystalline (We like it or not, I really like).
The answer is good. Sampling of quality. Korg on a previous generation I was tired very quickly (after only two months of use) sound to the headphones. You could hear the samples and then the fading of his time was not terrible. Nothing to do with this type of instrument. (Having said that the Korg has been making progress ... a monitor).
Experession very good and velocity.

Primary use: Piano1 was 80%, but also its type Hammond organ to accompany pieces Reggae, a little Electro2 piano, xylophone also at times.

OVERALL OPINION

Really designed for mobile use, the piano continues to please me. I use it for over a year now and no worries except for a small problem inversion sustain pedal that I had three times (Bug, you must power cycle).
I am very happy with the sound. Whether it's through headphones, or live on a good sound system it works very very well ...