IDEA International from Japan introduces a USB external speaker that is about the size of a credit card. Measuring 3.3” L x 2.2” W x 0.3” H, the USB Card Speaker can be plugged into any device that either has a USB drive input or earphone jack. IDEA International claims that the speaker lasts for about 5 hours at a time. The USB Card Speaker comes in a black, gold, or silver metal finish. Available now at A+R Store.