Sennheiser just announced these totally wireless earbuds for the Japanese market. They are truly wireless and bandless: no loop of plastic connecting buds between the ears. Each bud has a 2.4GHz wireless receiver built into it, and Sennheiser promises 10 hours per charge with no compromise to wireless fidelity. Price is jaw-meets-cracked-sternum: $630.
I eye these with a bit of skepticism. There is one notable advantage to wires: a cord snaking from your iPod makes it almost impossible to lose your ear buds. But there's very much the awareness of my own innate fuddyduddery: I feel like the first outraged optometrist who cried, "Contacts! They'll never work! Cram them in your eyes? And there's not even a nose piece in the middle to hold them together!"