although it is the manufacturer of the base glasses, be aware that until this pack is not sold in France by Samsung but is fully compatible with European models.
The price is a bit cheaper than buying 2 to the unit, I have received the first order with 2 glasses which laché defective after 5 minutes, so I returned everything (thank you Amazon in passing for the excellent service as always).
Then I received the second packet and everything is nickel.
I prefer battery models because it is less expensive to buy and batteries of this type are found more and more for extremely reasonable price so ... And then the 3D remains for me it's just a pleasure to say from time to time with a good film.