The technical features:

-can have a number of songs varies according to the length of the song:

-8 songs of 24sec. one
-4 songs of 46 sec. the UNON
-2 songs of 1.30 minutes each
-1 song of more than 3 min. one
-These songs is very long it can reproduce even the most complex phases of courtship.
-Available on request, songs with a sampling frequency of 44100 Hz comparable to CD quality!
-You can have memories customized very quickly