Great sound quality combining your visual experience during the visiting! As a result of specific noise-lock technology, okayo WT-808 series optimizes sound delivery. True sound quality provides you maximum comfort for the ear. Featuring 3.5 mm AUX out function enable connection to CD&MP3 players, and mobile phones which amplifies the application. The system is also available with adjustable volume control which allows everyone in the group to hear or speak at comfortable volume level.