Optimus Karaoke Echo Microphone (330-3016) Care and Maintenance Faxback Doc. # 33902 To enjoy your Optimus Karaoke Echo Microphone for a long time: Treat the microphone gently. Don't drop it. Keep it away from extreme temperatures. Keep it out of dirt and water. Don't take it apart, except to install or remove a battery. If something is wrong with the microphone, take it to your local Radio Shack store for help. (YO/EB 5/17/96)