Notice SONY MDR-NC300D

« se batteries or apparatus with battery-installed to excessive heat such as sunshine fire or the like. Features ? Digital noise canceling headphones with Sony's unique DNC Software Engine. Creation of a high-precision canceling signal delivers outstanding noise canceling performance. ? Automatic AI (Artificial Intelligence) Noise Canceling function. Automatic selection of the optimal noise canceling mode based on intelligent analysis of environmental ambient noise. ? Digital Sound Enhancer and full digital S-Master amplifier delivers ideal frequency response and high-quality music reproduction. ? Large 16 mm dynamic type driver units deliver a wide frequency range and broad dynamic range. ? Closed type vertical in-the-ear headphones for secure fit and wearing comfort. ? 7 sizes of hybrid silicone earbuds are included to ensure ideal seal within the ear for highest quality sound and also to provide wearing comfort during extended listening. ? Three sound modes (NORMAL/ BASS/MOVIE) available based on use or application. ? Built-in monitor function to hear surrounding sound without taking off the headphones. ? Easy-to-use volume control on control box. Location and Function of Parts (see fig. ?) ? Microphones ? Earbuds ? SOUND MODE button Changes the sound mode: NORMAL, BASS and MOVIE. ? VOLUME(+/–) button Adjusts the volume. The VOLUME + button has a tactile dot for ease of use. ? HOLD/POWER switch ? Battery compartment lid ? MONITOR button To hear ambient sound for safety. ? LCD display Indicates the current status or mode, etc. ? Gold-plated L-type stereo mini-plug ? NC OPTIMIZE button Optimizes the noise canceling sensitivity level. ? Clip holes To attach the supplied clip. Installing a battery (see fig. ?) 1 Unlock and open the battery compartment lid.2 Insert an AA/LR6 dry battery, ¾ end first. Insert the battery until the internal stopper holds the battery. Note Make sure to insert the battery ¾ end first. If you fail to do so, it may cause heat buildup or a fault.3 Close and lock the battery compartment lid. Battery life BatteryApprox. hours*1 Sony alkaline AA/LR6 dry battery 20 hours*2 *1 At 1 kHz, 0.1 mW + 0.1 mW output *2 Time stated above may vary, depending on the temperature or conditions of use. When to replace the battery When the battery becomes low, the battery remains status on the LCD display will change. The unit will turn off automatically if there is no battery remains. Replace the dry battery by checking the battery remains status. Note Take out the battery from the unit if you do not intend to use the unit for a long time. How to replace the battery Open the battery compartment lid, unlock the internal stopper, and then take out the battery. How to install the earbuds correctly (see fig. ?) If the earbuds do not fit your ears correctly, the noise canceling effect will not be optimal. To optimize noise canceling and to enjoy better sound quality, change the earbuds to another size, or adjust the earbud position to fit your ears comfortably and snugly. If the earbuds do not fit your ears, try another size. Confirm the size of the earbuds by checking color inside (see fig. ?-?). When you change the earbuds, turn to install them firmly on the headphones to prevent the earbud from detaching and remaining in your ear. Earbud sizes... »