Plantronics DuoPro H171 & H171N Corded Headset Date Codes Plantronics H171 and H171N Headset Date Codes The date code of your product designates its date of manufacture, and it can be used to establish your warranty period. The date code is generally listed with your product’s model and part number, although this is not always the case. The date code of the DuoPro family … Continued
