Sennheiser surround sound WIRELESS HEADPHONES ?

Open circumaural RF wireless headphone system Excellent sound for hi-fi systems Switchable surround sound Optional wall mounting Automatic search tuning with memory function Three selectable RF channels Intelligent auto-tuning Very light headphones, extremely comfortable to wear Range of up to 150m Easy recharging: put on cradle Operating time 22 hours Acoustic and visual signals confirm the adjustment of new settings In original packaging, been opened but only used once! Worth over 100. Will accept 70 or nearest offer!