Unfortunately, there are no date codes on most of the computer headsets. All models with the exception of those listed below
do not have date codes and will require a dated proof of purchase for warranty replacements. The following models
do have date codes:
CS50-USB:Located on the back of the charging base and begins with "B"
510-USB and .Audio 910:Located on the inside of the mic boom
CAT51VR: Located under the foam cushion on the side with the mic
CAT52VR: Located under the foam cushion on the side with the mic