Where can I find the serial number for my Zone 305 headset?

You can find the serial number in the Logi Tune app:

1. In the Devices list, select Zone 305.

2. Click on the (i) button on the right, then click More Details under Zone 305.

   

   
   

3. Scroll to the bottom of the list to see the serial number.

Alternatively, a serial number is also printed on the box and on a label inside the left earpad.