[. . . ] The validity of the CE marking is restricted to only those countries where it is legally enforced, mainly in the countries EEA (European Economic Area). 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. [. . . ] 2 Installing a battery/Colocación de la pila OPEN Notes on the noise canceling function – Adjust the earpads so that they cover your ears, otherwise noise canceling will not function properly. € The noise canceling effect may vary depending on how you wear the headphones. Tactile dot (on the left) Punto táctil (a la izquierda) 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. For dual jacks para tomas dobles for stereo mini jack para minitoma estéreo Microphone 4 Turning on the power/Encendido 5 Wearing/Colocación After use Turn off the power of the headphones Después del uso Apague los auriculares – After you turn on the power of the headphones, you may hear a slight hiss. This is the operating sound of the noise canceling function, not a malfunction. € The noise canceling function works for noise in the low frequency band primarily. € The noise canceling effect may not be pronounced in a very quiet environment, or some noise may be heard. Plug Troubleshooting No sound – Check the connection of the headphones and the equipment. Hours 3) Sony alkaline battery 80 hours 4) LR03 SIZE AAA 40 hours 4) Sony manganese battery R03 SIZE AAA The noise canceling effect is not sufficient – The noise canceling function is effective in low frequency ranges such as airplanes, trains, or offices (near air-conditioning, etc. [. . . ] € Supplied plug adaptor for easy connectivity to stereo or dual jack for in-flight entertainment services. 90% reduction of energy of sound compared with not wearing headphones. [. . . ]