Set 900 is a lightweight, high-quality cordless headphone system with integrated hearing amplifier. With its crystal-clear sound and enhanced speech intelligibility, the system will also amplify sound of TV and hi-fi systems, and can be used in theatres and churches that provide infrared audio transmission. The ear bows are foldable during transport. With integrated microphones, the headphone also serves as a hearing amplifier, which helps to follow conversations easily. There are three hearing settings selectable on the transmitter to adjust the sound to the individual hearing ability. The stethoset receiver is ideal for wearers of spectacles.