Read this CNET article for details on the 2012 Universal 3D glasses models:
I got a pair of the low cost Samsung SSG-4100GB from amazon and they work fine on my Panasonic 50ST50 TV.
They are recommended as a good deal especially for extra pairs for guests and kids.
So I have one of the rechargeable Panasonics (I got one for 1/2 price on ebay) as well.
Note, only the 2012 Panasonic 3D TV models are compatable with the universal bluetooth 3D glasses as the older 2011 TVs used infared glassesEdited by BriscoCountyJr - 10/7/12 at 12:43pm