A:AnswerYes you can buy a complete set or you can buy a Bluetooth transmitter connect it to the 3.5 jack on the tv and use Bluetooth headphones of your choice
A:AnswerA little, but not enough to bother getting these if you already have the X. Sound quality is a little better and the buds don't fall off as bad.
A:AnswerThe jaybird X2s work really well for radio, I pair them with my iPhone and I use Pandora all the time. The sound quality is good and the fit is as expected - the earbuds don't shift while I exercise. The flat cable that connects the two earbuds can snag on your collar so you may want to use the supplied plastic wire management clips to secure the cable. Once your device Bluetooth pairswith these earbuds, I do not think you will have any problems; they work really well.…
A:AnswerNo, not quite.
What you describe is called 'Bluetooth Multipoint'. The Jaybird X2's let you pair up to 8 devices, but only 1 can be connected at a time.
Multipoint has been available for years, consumers have come to expect it -- especially in a $200 (after tax) headphone that went to market in 2015. The only reason I can think of why Jaybird left it out the X2's would be battery life. Multipoint would considerably reduce the 8-hours they've been rated for.