[. . . ] The earphones contain magnets that generate a magnetic field which could cause interference with cardiac pacemakers and implanted defibrillators. [. . . ] In order to prevent accidents: Do not wear the earphones in an environment that requires your special attention (e. g. Keep the earphones and accessory parts out of reach of children who could swallow smaller pieces. In order to prevent damage to the earphones: Do not heat the earphones (hairdryer, heating, extended exposure to sunlight, etc. ). Do not store wet earphones in a bag. Specifications Frequency response 18 to 20, 000 Hz SPL Impedance Weight 120 dB (1kHz/1Vrms) 16 Approx. Use a cloth to carefully remove buildup from the earphones and ear pads. Then allow the earphones to air dry at room temperature. Manufacturer Declarations Warranty Sennheiser electronic GmbH & Co. For the current warranty condasitions, please visit our website at www. sennheiser. com under "Service & Support" or contact your Sennheiser partner. Declaration of Conformity This product is in compliance with the essential requirements and other relevant provisions of directives: EMC 2004/108/EC, RoHS 2002/95/EC, WEEE 2002/ 96/EC. WEEE Declaration Please dispose of this product by taking it to your local collection point or recycling center for such equipment. The declarations are available at www. sennheiser. com. 5 Sennheiser electronic GmbH & Co. [. . . ] The declarations are available at www. sennheiser. com. 5 Sennheiser electronic GmbH & Co. [. . . ]