ユーザーズガイド SONY VAIO VGN-TZ91NS

[. . . ] How to adjust the headband length (see fig. [. . . ] ) Wear the headphone marked  on your right ear, and the one marked  on your left ear. There is a tactile dot on the unit marked  to distinguish the left side (see fig. Hold the headband and the unit to adjust the headband length.  Specifications Type: Open air, dynamic / Driver unit: 30 mm (CCAW Voice Coil), dome type / Power handling capacity: 1, 000 mW (IEC*) / Impedance: 24 Ω at 1 kHz / Sensitivity: 102 dB/mW / Frequency response: 14 – 22, 000 Hz / Cord: 1. 2 m (47 1/4 in), Y type, flat / Plug: Gold-plated L-shaped stereo mini plug / Mass: Approx. 95 g (3. 35 oz) without cord / Supplied accessories: Operating Instructions (1), Card warranty (1) * IEC = International Electrotechnical Commission Design and specifications are subject to change without notice. Precautions  Listening with headphones at high volume may affect your hearing.  Clean the headphones with a soft dry cloth. Do not allow the plug to become dirty, otherwise the sound may deteriorate.  Do not leave the stereo headphones in a location subject to direct sunlight, heat or moisture. Optional replacement earpads can be ordered from your nearest Sony dealer.    http://www. sony. co. jp/avp-regi/ http://reg. msc. m. sony. jp/avp/     [. . . ]  Do not leave the stereo headphones in a location subject to direct sunlight, heat or moisture. [. . . ]