As previous reviewers have said, this is a great little toy and very hard wearing. It has been dropped from a height several times and still comes up with the goods!
The padding around the sides of the unit makes this phone easy to grab and hold, and the ariel makes a great chewie!
The voice is a nice, English accent which says "let's call the rabbit" or something similar. If baby hits the same number twice, a song plays (3 blind mice, old mcdonald etc). There are four songs. Plus a phrase for each button. When the songs play, the buttons light up in time to the music.
It also has a cute little mirror surrounded by rattling beads, so lots of additional stimulation packed into this compact little unit!
The only thing is it's a bit quiet - but that's a health and safety thing.