David Trent has a Songbird disposable hearing aid put in his ear on Thursday, July 27, 2000 at an audiological clinic in Atlanta. Songbird, manufactured by Songbird Hearing Inc. of Cranbury, N.J., is disposable because the batteries don't need to be replaced. When the hearing aid wears out in 30 to 40 days, it can be thrown away. (AP Photo/Alan Mothner)
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