Earbud Date Code
Remove the eartip from the earbud.The date code is located on the earbud nozzle.
Charging Case Serial Number
Remove the right earbud from the charging case. The charging case serial number is located on the left side of the right earbud well. The charging case serial number is also located on the carton outer label.
Checking the Serial Number in the Bose Music App
In the Settings menu, click "Technical Info" to see the serial number.