Sony MDR-RF4000K Wireless Headphones Crystal Clear Sound Quality

Sony today released the MDR-RF4000K new digital wireless headphones that are designed to fit perfectly fairs today, with a new single storage and loading dock, which cuts the  ugly kids.

These headphones feature a powerful diaphragm 40 millimeters long time to produce crystal clear sound quality. These wireless headphones are supplied with a NiMH battery that provides up to 7 hours of listening.

In addition, you can drag a single AAA alkaline battery, which will increase the usage time of up to ten hours.

Sony MDR-RF4000K headphones will be on sale in April 2010. No pricing information yet.