You can connect these headphones to two different Bluetooth sources at the same time.
Brad's Deals Editor Michael,
The Sennheiser HD1 Free Bluetooth Headphones drop from $199.99 to $169.95 to $129.99 when you apply the code NEFPSJH40 in your cart at NeweggFlash. Plus the shipping is free. This is the lowest price we found for these headphones by $40. These headphone average around six hours on a full charge. They support both the AAC the aptX codecs, so the sound quality is among the highest that can be produced over Bluetooth. There is no sales tax (except CA, IN, NJ, and TN).