I n t r o d u c t i o n61. IntroductionThe Nokia Wireless Stereo Headset (HS-12W) allows you to make and receivephone calls, and listen to FM radio and music tracks.Read this user guide carefully before using the headset. Read also the user guidefor your phone, which provides important safety and maintenance information.Keep the headset out of reach of small children.■ A few practical rules about accessories andenhancements• Keep all accessories and enhancements out of the reach of small children.• When you disconnect the power cord of any accessory or enhancement, graspand pull the plug, not the cord.• Check regularly that enhancements installed in a vehicle are mounted and areoperating properly.• Installation of any complex car enhancements must be made by qualifiedpersonnel only.■ Hearing aid compatibilityThis device model complies with the requirements of the FCC rules governinghearing aid compatibility. Device models meeting these requirements have an M3microphone or higher rating. The M-rating, shown on the device, refers to lower RFemissions levels. A higher M-rating generally indicates that a device model has alower RF emissions level which may improve the likelihood that the device willsuccessfully operate with certain hearing aids. Some hearing aids are more