If you spill a drink on your Walkman or wash it in a washing machine, liquid may get inside the Walkman. Stop using the Walkman immediately and consult your nearest Sony dealer.

The water resistant performance of your Walkman is not applicable to liquids other than fresh water, tap water, perspiration, and pool water. If any liquid other than those mentioned gets on your Walkman, rinse it off with fresh water at room temperature or gently running tap water immediately and wipe the moisture off the Walkman using a soft dry cloth.
Sound may become muffled if water gets inside the headphones because the headphone sections are not water-tight. If water gets in the headphones, remove the water and do not use the Walkman until it dries completely.