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A 4-digit code located on the earbud body or the eartip. You may need to remove the silicone tip to see it.


The 17-digit serial number will be located on the inside of the earcup. You may have to slightly lift the inner fabric to see the label.


Check the headband for a 4-digit code. If you are unable to locate one, remove the cushion to reveal the 17-digit serial number on the earcup. If your headphones use a rechargeable battery, remove the battery and look inside the battery compartment.

Aviation headsets

The 17-digit serial number for the headset will be on the headband under the cushion.

Bluetooth® headset

The 4-digit serial number is located on the back of the headset, next to the charging port.