Sereonic TV Soundbox's high fidelity speakers deliver loud, lifelike sound and crystal clear dialog. Totally wireless and lightweight with a convenient handle that allows you to take it with you wherever you're watching TV, even in another room. Built-in rechargeable battery (up to 8 hours of listening time).
Transmission: 2.4 GHz radio frequency
Speakers: 2x5W Class D
Speaker battery: built-in lithium-ion battery
Operating range: Over 100 feet in an open field
AC adapter power: 100-240VAC/50-60 Hz
input; 9VDC 1.5A output