Plantronics EncorePro HW291N & HW301N Corded Headset Date Codes The EncorePro HW291N/HW301N date codes will be located on the speaker, under the ear cushion. If a binaural model, the code will be on the microphone side. The first number represents the month (01=January, 02=February…). The two numbers following the dash represent the year (05=2005). Next is the model of the headset. An “HW291” represents … Continued
