Bluetooth audio transmitter from Sennheiser. Upgrade your home entertainment system with this sleek Bluetooth audio transmitter. The BT T100 lets you easily connect your wireless headphones to your stationary sound equipment. Thus, you can enjoy freedom of movement at home while listening to your music or watching movies – without disturbing others. Packed with cutting-edge wireless technology the BT T100 delivers high-quality audio as well as perfect synchronicity of picture and sound when watching visual media.