Amazon.com Product Description:
Foldable in design, this SRS-T77 travel speaker is low-impact and low-weight. Weighing in at only nine ounces (w/o batteries), and with a folded size of a CD case, this speaker is sure to a hit with travellers. The one-box stereo sound is better achieved by Sony's decision to separate the speaker cabinets by a slight gap. The speaker's dynamic sound duct utilizes speaker cabinet space and battery cabinet space to enhance the bass sound. The four watts of output power can boost the sound that other passive speakers cannot achieve. The speaker also sports a neodymium magnet which produces a high amount of power in a very small amount of space and weight. The built-in Mega Bass system produces a deeper bass level. To help protect TV and computer monitors from disturbing picture quality problems, the SRS-T77 is magnetically shielded. The speaker runs on either four, AA batteries, or through an optional AC adaptor. This AC adaptor is world-ready, sporting an ability to receive 100V-240V. This highly-compatible AC adaptor will come in quite handy on those long, international trips. The connecting cord is fifty centimeters long.

What's in the Box
Sony SRS-T77 speaker, carrying pouch, AC adaptor, user's manual and a ninety day warranty.