Sony will be introducing an improved wearable Walkman in the near future. The WS-Series will feature NFC and Bluetooth which will permit its use as a wireless headset. In addition, the capacity has been bumped up substantially. While the current W270 tops out at 8GB, the new WS-Series will come in 4 and 16GB capacities, NWZ-WS613 (4GB), NWZ-WS615 (16GB).