Exactly as the name suggests. Well.... not really. This racquet does NOT have a built in MP3 player, but does "uniflex". The Uniflex MP3 has a square pattern which allows the main strings and the cross strings to cover the same distance. Spin is phenomenal. Very solid racquet offering nice power and control. Agressive baseliners will love the depth they can get on their shots. Big servers will be awarded with extra pop. Very nice feel and excellent feedback from kick serves. Recommended to a the player who has achieved a level of 4.0 or higher. This is a racquet to look for.