Ahh, the dorkiness that is/are 3D glasses. If you need to pick up an extra pair of Sony’s Active Shutter glasses, they’re available now on Amazon for $150 each. Making 3D movies some very expensive rentals or buys.
They are compatible with Sony’s HX800, HX909 and LX900 3DTVs, and the batteries last for up to 100 hours before they need charging. Don’t forget, you’ll also need an emitter for $48 if you don’t have one already and a 3D Blu-ray player. The 3DTV too of course. And lots of money.