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USER GUIDE FRONT BACK Porta Pro Wireless On-Ear Headphones >4s >4s >8s KOSS Porta Pro Wireless >1s >1s...
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Listen at moderate volumes to avoid hearing damage. 1-YEAR LIMITED WARRANTY - KOSS, KOSS and Design, HEARING IS BELIEVING, PORTA PRO, and THE SOUND OF KOSS are Registered in U.S. Patent and Trademark Office and are trademarks of Koss Corporation in other countries. Patent Information: www.koss.com/patent - Product features and specifications are subject to change without notice.
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