Perfect for your notebook computer or Walkman player the SRS-T33 is a compact portable speaker with Mega Bass and One-Box Stereo Sound. Boasting a small design and weighing only 12 ounces with 4 "AA" batteries the SRS-T33 is ideal if you want to enjoy your music on the road in the office or at school. The unit is magnetically shielded so it won't interfere with other electronics. This portable speaker is available in three fashionable colors including white blue and silver. MP3 & Portable Electronics Accessories SRS-T33BLUE