Mp3 has become the favorite music format around the world. It helps you compress an entire selection of music, aprox. 10 CDs with 15 songs each, into a once computer-readable-only CD. Now, thank to the fast distribution of the .mp3 format many companies are designing and producing portable players, either CD-ROM or internal hard disk. One of such is our little friend, perhaps the smaller available in the market. It features normal playback, volume selection, forward & rewind, next & previous songs, shuffle, loop, loop & shuffle, 1 song loop, part of a song loop (selected easily by user), 4 predetermined equalization levels, clock, date, alarm & chronometer. It also displays the songs name (sadly, letter by letter) and can be programmed to display a short animation.
I have found it really useful. Jogging, hiking, cycling, walking and even resting, I carry my Casio with headphones in a little bag, also with a car connector kit.
A few things could be fixed: the amount of memory available (32Mb), respectable quantity due to the size; the way information is stored, some combinations of songs can't be correctly allocated in the memory slots; and the wristband, that easily absorbs sweat smelling like $%#$t.
Surely, Casio will release a replacement band made of resin. I even have confidence that a newer model, featuring more memory, will come soon (hopefully with the option to upgrade the WMP-1-1 instead of buying a new one).
By the way, the watch is not water proof, but can withstand mild rain. But anyway, is there any MP3 player completely waterproof?
Bottom line: recommended if you want to buy a music player & a watch but only have money for one item.

Recommended: Yes