The Transformers Music Label line features popular characters from the "Transformers" universe that are now transformable into practical audio devices! Frenzy (blue) and Rumble (red), Soundwave's minions that could transform into cassettes in Generation 1 "Transformers," are now a cool pair of stylish white earphones that are transformable into robot mode! Each is 7cm tall in robot mode and 4.5cm tall in earphone mode. An audio cable with mini stereo plug is included, along with a character card. These earphones can be used with audio players that accomodate a mini stereo plug, and of course they're a perfect pair-up with the Sonic White or Spark Blue Soundwave MP3 player!