Poly Blackwire 5220 USB Type-A Stereo On-Ear Headset - Manual (Page 5)

Lengthen or shorten the band until it fits comfortably. The cushions should sit comfortably over
the center of your ears.
The headset can be worn with the boom on your left or right side. For true stereo listening, wear
the boom on your left side.
Rotate the boom to align with your mouth.
Gently bend the boom in or out so it is approximately one finger width from the corner of your
mouth.
Fit
Adjust the headband
Position the boom
Adjust the boom
5