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Corded Office Headsets: Date Code Locations

Supra Models H51, H61, H51N, and H61N
Polaris Models P51, P61, P51N, and P61N


StarSet Models H31 and H31N
Polaris Models P31 and P31N


Mirage Models H41 and H41N
Polaris Model P41


Tristar - Headset or QD Models H81 and H81N
Polaris Models P81 and P81N


DuoSet Models H141 and H141N
Polaris Models P141 and P141N


Freehand Models H131N and H132N


DuoPro Models H151, H151N, H161, H161N, H171, H171N, H181, and H181N
Polaris Models P151, P151N, P161, P161N, P171, P171N, P181, and P181N


Encore Models H91, H91N, H101, and H101N
Polaris Models P91, P91N, P101, and P101N


EncorePro Models HW291N and HW301N

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SupraPlus Models H251, H251N, H261, and H261N
Polaris Models P251, P251N, P261, and P261N


SupraPlus SL Models H351, H351N, H361, and H361N
Polaris Models P351, P351N, P361, and P361N

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