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Ships within 48 hours · Estimated delivery Aug 12 - Aug 17
屏幕：LED數碼管（尺寸：21x14mm）
・Speaker unit 40mm Fullrange speakerx1+Bass diaphragmx1
播放時間：約7-8小時
The pinnacle of audio reproduction
光盤格式：CD/CD-R/CD-RW/MP3
Koss PRO4AA km5 屏幕：LED數碼管（尺寸：21x14mm）Koss Pro4AA headphones set the standard for full size professional headphones. They were introduced in 1970 as the first dynamic headphones to deliver true full frequency and high fidelity performance with impressive noise isolating capabilities.
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