SERVICE AND WARRANTY INFORMATION
Locating the headset serial number
Your Bose® A20® Aviation Headset is identified by a unique headset serial number located on the underside of the headband and underneath the headband cushion. Reference this serial number when you register your product or contact Bose for technical support.
Serial number
Headband 
cushion
Be sure to properly reseat the headband cushion by pressing down firmly. For more information on replacing the headband cushion, see Refer to “Headband cushion replacement” on page 26.
Warranty
Details of the limited warranty are provided on the warranty/product registration card included in the product carton.
Limited warranty service
To return your headset to Bose for repair
Return your headset using the following procedures:
1.Contact the Bose organization in your country/region (visit Global.Bose.com for Bose contact information in your country/region) for specific return and shipping instructions;
2.Label and ship the product, freight prepaid, to the address provided by the Bose organization in your country; and
3.Place any necessary return authorization number prominently on the outside of the carton. Cartons not bearing a return authorization number, where required, will be refused.
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