[. . . ] € You should use extreme caution or temporarily discontinue use in potentially hazardous situations. This product may receive radio interference caused by mobile telephones during use. [. . . ] Caution • When using this unit in an airplane, heed the instructions given by the airline company. 3 mm stereo standard plug adaptor and air plug adaptor out of reach of children to prevent swallowing. € To avoid product damage, do not expose this product to rain, water or other liquids. € Do not leave the battery in an automobile exposed to direct sunlight for a long period of time with doors and windows closed. € Mishandling of battery can cause electrolyte leakage which can damage items the fluid contacts and may cause a fire. ) (Neodymium) Impedance: 71 Ω (1 kHz, NC ON), 26 Ω (1 kHz, NC OFF) Sensitivity: 96 dB/mW (500 Hz, NC ON), 96 dB/mW (500 Hz, NC OFF) Frequency response: 10 Hz - 30, 000 Hz Level of noise reduction: 92 % (more than 22 dB) (Approx. Com manuals search engine English The noise cancelling function Environmental noises in airplanes, trains and buses, and noise caused by air-conditioners is reduced by 92%, providing a quieter listening environment. This function allows you to enjoy music without raising the volume too high, and is, therefore, kinder to your ears. This unit mainly reduces low-frequency noise: as such, sounds with relatively high frequency components such as car horns, telephone ringers and people’s voices may not be attenuated very effectively. A 1 Carrying case (RFX7920) b 1 Detachable cord (RFX7918) c 1 Air plug adaptor (RFX7919) For the United Kingdom only: Use numbers indicated in parentheses when asking for replacement parts. Inserting the battery Pull the left earpad plinth g from [OPEN] side to remove it. Place the battery inside, install the left earpad plinth g by pushing in the left housing. [. . . ] Le volume et la qualité sonore changent, The volume and sound quality change, optimisant la qualité sonore pour cette optimizing the sound quality for this fonction. A Disconnect the detachable cord from the b Pour ranger le porte-écouteurs, déplacez jack. [. . . ]