H and P Series Headset Date Code Location

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 Models P41

 

Tristar Models H81 and H81N (Headset or QD)


Polaris Models P81 and P81N

   

DuoSet Models H141 and H141N

Polaris Models P141 and P141N

 

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

 


Encore Pro Models HW291N and HW301N


 

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