The date code of your product designates its date of manufacture, and can be used to establish your warranty period.
Date Codes Explained
Bluetooth date codes consist of one letter and one number. The letter indicates the month of manufacture, and the number indicates the year. For example, C5 = March 2015.
The date codes for non-Bluetooth vary, and might be:
Date Code Locations
The date code typically appears near your product’s model and part number, although this is not always the case. The date code may be located on the base of the unit, beneath the ear cushion, under the battery, or along the microphone boom. On corded mobile headsets, it may be located near the 2.5 mm plug.
For more specific information, refer to one of the following:
If you are unable to find your date code, please contact Plantronics Technical Support. Note that you can also use a dated proof of purchase (i.e., receipt) to establish your warranty period.
Click here for instructions on how to replace your product.