Fortunately, Samsung has democratized the 3D glasses (and that initially the pair was sold to more than a hundred euro for rechargeable via USB). And in addition they are compatible with all 3D TVs active since manufacturers have standardized their interconnections. The price of the lot in batteries (which are easily found on Amazon [ref. CR2025]) have an exceptional value that makes it easy to dispense with much more expensive rechargeable models. Only small problem, I think compared to 4100SSG, the quality of plastics is lower; branches tend (at least for my models / my series) to come off so easy and can be a source of unexpected fall before / after the session as some users ("seedlings") have only cure of Advice "big" ;-) A still highly recommend!
