Sennheiser Wireless Headphones ?

Sennheiser RS 120 headphones in excellent condition, opened once to test, an unwanted present This unit enable the user to listen to audio with headphones without wires, you can place the unit into a stereo (or an other device), and then move around the house listening to the audio in perfect quality. The headphones charge when resting on the wireless sender. Detailed Specifications deviation < 0.7% frequency response 22Hz - 19,500Hz connections 3.5mm and 6.3mm weight approx 200g collection only, 40 cash ono Thanks