[. . . ] Disconnect the unit from the connected device, and consult your place of purchase, or a Sony dealer. 1 mW output 4) Hours required to fully charge an empty battery 5) Time stated above may vary, depending on the temperature or conditions of use. Compatible iPod/ iPhone/iPad models You can use the headphones with only the following models supporting remote control. [. . . ] These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: – Reorient or relocate the receiving antenna. € Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. You are cautioned that any changes or modifications not expressly approved in this manual could void your authority to operate this equipment. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Using the Center button (Inline remote and microphone cord for iPod/iPhone/iPad) Operation Single press Double press Triple press Long press Explanation Plays/pauses a track of the connected iPod. € It may take a few seconds to analyze the environmental ambient sound. 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. If you have any questions or problems concerning the system that are not covered in this manual, please consult the nearest Sony dealer. Notes on charging the headphones – Charge the headphones using the supplied micro-USB cable. – Charge in an environmental temperature of between 5°C and 35°C. When storing it for more than a year, charge the battery once a year to prevent over discharge. € For system requirements for a computer that can charge the battery using USB, see “System requirements for battery charge using USB”. € If you recharge the headphones by connecting to an AC outlet, use the separately-sold USB AC Adaptor specific in “Recommended accessory (sold separately)”. [. . . ] € The noise canceling effect may not be pronounced in a very quiet environment, or some noise may be heard. € When you use the headphones in a train or a car, noise may occur depending on street conditions. Distorted sound – Turn down the volume of the connected equipment. [. . . ]