2.4G RF Wireless Headphones for Avantree Multiple Headphone - Aria RF Black.

["SHARE YOUR JOY: Enhance your experience with Duet Extra Headphones. Use this product as an additional headphone for the Duet, Quartet Extra, or Audiplex2403s kits to allow friends or family members to wirelessly watch TV or a movie or listen to music right next to you. Up to 100 headphones can be connected to the transmitter of any of these kits. Note: Headphones are not sold separately.", "SYNCED SOUND & VIDEO: Enjoy perfect synchronous picture and sound reproduction with Duet Extra headphones. With 2.4 GHz RF technology, delays are reduced to ~30 ms – practically nothing. And even if you add additional Duet Extra headphones to your existing Duet/Quartet 5049/Audiplex 2403s transmitter, there will be no lip-sync delays: Everyone will be able to enjoy the same great experience.", "INDIVIDUAL SOUND SETTINGS: Duet Extra headphones come with individual volume controls so you can adjust the volume to your liking. And don't worry – adjusting the volume of other headphones that may be connected to your existing Duet/Quartet 5049/Audiplex 2403s transmitter will not be affected.", "HEAR CONVERSATIONS CLEARLY: If you have trouble distinguishing voices from background noise on the screen, simply activate the Clear Voice mode with a single press on the Duet Extra headphones. This will digitally enhance dialogue on the screen, allowing you to clearly understand conversations.", "FLEXIBLE FIT: Duet Extra headphones feature an adjustable, stretchable headband with rotating ear cups for you to find the perfect fit for your needs. In addition, the soft memory foam ear cushions protect your skin during long wear times and are easily replaceable if needed."]