User manual SONY MDR-NC11

[. . . ] Adjust the earbuds position to sit on your ear comfortably, and push them into the inside of your ears so that they fit your ears snugly. You can fasten the battery box by its clip on a shirt pocket. General Type dynamic, closed Driver units 9 mm dia Power handling capacity 50 mW Impedance 20 ohms at 1 kHz (when the power is on) 8 ohms at 1 kHz (when the power is off) Sensitivity 102 dB/mW (when the power is on) 98 dB/mW (when the power is off) Frequency response 10 ­ 22, 000 Hz Frequency range of active noise attenuation 50 ­ 1, 500 Hz more than 10 dB at 300 Hz Power source DC 1. [. . . ] This device complies with Part 15 of the FCC Rules. 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. You are cautioned that any changes or modifications not expressly approved in this manual could void your authority to operate this equipment. The M size earbuds are attached to the headphones before shipment. If you feel the M size earbuds do not suit your ears, replace them with the supplied S or L size earbuds. Do not use the headphones when use of electronic equipment is prohibited or when use of personal headphones for inflight music services is prohibited. If you have any questions or problems concerning the system that are not covered in this manual, please consult the nearest Sony dealer. Hearing experts advise against continuous, loud and extended play. If you experience a ringing in your ears, reduce the volume or discontinue use. After listening to music Turn off the power of the headphones. Listening to music 1 Connect the headphones to the AV equipment. The noise canceling function is only effective for noise in the low frequency band. Although noise is reduced, it is not canceled completely. Do not cover the microphone of the headphones with your hands. [. . . ] Ultra compact earphones with 9mm driver unit fits comfortably in the ear and closed type earphone structure delivers deep bass sound. Soft silicon rubber earbuds are used for stable and comfortable fit in the ears. Volume control function for easy connecting to your portable audio player. [. . . ]