Handheld Speaker for Infrared Clear Easy Headphone Sound Assist Series Audio-Technica TV, Wireless, Sound, Monaural, Operation, Built-in Amplifier,

[Wireless] Adopts an infrared method with less interference with other devices and less audio delay, allowing you to enjoy TV audio in a listening area of up to 7m. [Clear Sound] The audio and lines of news and dramas are highlighted, allowing you to hear the TV sound clearly. You can select two levels of effectiveness depending on the program and your preferences. [Easy operation] Simple operation design with power button, volume knob, and "clear sound" switch. [2WAY power supply method] There are two types of power supply: the included AC adapter or AA batteries (sold separately). It can be used even in places where there is no outlet nearby. [Auto power off function] If there is no sound from the TV or the sound is low for a certain period of time, the speaker will automatically turn off.