[. . . ] It can also be potentially dangerous to play your headsets at high volume while walking, especially at pedestrian crossings. You should exercise extreme caution or discontinue use in potentially hazardous situations. [. . . ] When you are not going to use your Walkman for a long time, remove the batteries to prevent damage from battery leakage and corrosion. ⷠWhen the sound becomes unstable or cannot be heard, replace the old batteries with new ones. If you experience a ringing in your ears, reduce volume or discontinue use. * except for FX157/FX153/FX151 Notes on playing cassettes · Do not use cassettes longer than 90 minutes except for long continuous playback. ⷠIf the tape is playing but no sound comes out, the batteries may be weak. Replace all dry batteries with new ones or recharge all rechargeable batteries. ⷠIf your Walkman has not been used for a long time, run the Walkman for a few minutes before inserting a cassette. ⷠWhen the AVLS switch is set to LIMIT, the playback sound may be distorted or unstable according to the music (especially the bass boosted part). ⷠWhen the AVLS switch is set to NORM, you will be able to enjoy the full volume capability of your Walkman personal stereo. Before using, charge the rechargeable battery with the supplied charger. ⷠUse only the rechargeable battery NC-AA (WM) with the supplied battery charger. ⷠIf the rechargeable battery is new or it has not been used for a long time, it may not be charged completely. When you carry it with you, never carry it with other metallic objects such as keys in your pocket. Note If you have inserted a cassette with a metallic shell or label and radio reception interference occurs, remove the cassette. [. . . ] Note If you have inserted a cassette with a metallic shell or label and radio reception interference occurs, remove the cassette. Car battery cord DCC-E130L, DCC-E230 Your dealer may not handle some of the above listed accessories. [. . . ]