Yealink YHA-HB 
The YHA-HB is a headband that helps secure the WH63/WH67 on the head, keeping your headset safe and your calls free from interruptions.
To meet various preferences of users, Yealink created the WH63 and WH67 headsets with a lightweight design and 4 wearing styles, including the Headband style, which uses the YHA-HB. 
Simply attach a WH63 or WH67 headset to the YHA-HB, and start taking calls right away.