Notes on use on an airplane

Do not use the headphones when use of electronic equipment is prohibited or when use of personal headphones for in-flight entertainment services is prohibited.

Notes on charging the headphones

• Charge the headphones using the supplied micro-USB cable. Otherwise, it may cause a malfunction.
• Charge in an environmental temperature of between 5°C and 35°C. Otherwise, the battery may not fully charge.
• If you have not used the headphones for a long time, the life of the rechargeable battery may become short. This will improve when you repeat the charging and discharging process several times.
• Do not store the headphones in hot places for a long time. If storing them for more than a year, charge the battery every six months to prevent excessive discharge.
• For system requirements for a computer that can charge the battery using USB, see ”Compatible operating systems (Windows)” or ”Compatible operating systems (Mac).”

Notes on handling

• Because the headphones are designed to fit closely in your ears, forcing them against your ears may result in eardrum damage. Avoid using the headphones where they are liable to be struck by people or other objects, such as a thrown ball, etc.
• Pressing the headphones against your ears may produce a diaphragm click sound. This is not a malfunction.
• Clean the headphones with a soft dry cloth.
• Do not leave the plug dirty otherwise the sound may be distorted.
• Be sure to consult a Sony dealer when the earpads become dirty or damaged, or when the headphones require repair work.
• Do not leave the headphones in a location subject to direct sunlight, heat, or moisture.
• Do not subject the headphones to excessive shock.
• Handle the driver units carefully.
• If you feel drowsy or sick while using the headphones, stop use immediately.

Note on static electricity

In particularly dry air conditions, noise or sound skipping may occur, or mild tingling may be felt on your ears. This is a result of static electricity accumulated in the body, and not a malfunction of the headphones.

The effect can be minimized by wearing clothes made from natural materials.

About replacement ear cushions

Optional replacement ear cushions can be ordered from your nearest Sony dealer.