Onkyo has released a new set of MHP-UW2 wireless headphones. The acoustic earbuds operate on a 2.4GHz frequency. Plug the 46 x 90 x 17mm transmitter into your iPod and you are good to go. With lithium-ion batteries, expect about 8 hours of use before needing a recharge. The headphones come with a USB cable and AC adapter. Look for a November release for ¥20,000 (~$20.00.)