RF wireless system for home AV entertainment with up to 100 m long transmission even through walls and an all-in-one transmitter / charger for storing headphones. Enjoy maximum freedom when watching TV or listening to music with a range of up to 100 meters and 20 hours of use on a single charge. The headphones have a closed construction, radio frequency connection, volume control, frequency range 18Hz – 22000Hz, speaker size 40mm. Thanks to the high-quality fine materials, you will not have a headache even after long hours and your earbuds will not push you.