Summary: I bought the item because I was interested in 3 MOS technology and twin memory. But when I received it, I can't find twin-memory. There is only one memory in the Camcorder. I asked amazon and they delivered me another one. The new one was same as the old one. I emailed amazon and asked why. They told me they were just the retailer and asked me to contact with Panasonic. There is no answer from Panasonic.