Plantronics Freehand H131N & H132N Corded Headset Date Codes The date code of the Freehand family of headsets will be located on the side of the headset microphone boom, near the speaker. The first two numbers represent 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 “H13” represents the Freehand. The … Continued