The Japanese company Dreams has unveiled their new portable speaker. The Sound Ball is designed for your PMP and small enough to be kept on a key chain. Available in purple, pink, or green, the gadget features a built-in rechargeable battery and an on/off button. Hook it to your cell phone, backpack, or laptop when not in use. The Sound Ball comes with a USB charge cord and stereo mini-cable. It carries a price of $39.99.