Vuzix Wrap 1200 Video Eyewear User Guide - Manual (Page 20)

Four bars indicate a fully charged battery. When the remaining battery level drops to
approximately 10%, the indicator will display only a single bar and the battery indicator will be
displayed regardless of the OSD’s display status.
Note: Some batteries do not correctly register their charge state may not display four bars even
when fully charged.
Audio Level Control
Wrap earphone volume adjustment is made using the Adjustment Buttons on the Control Box,
when the OSD is not displayed. If you are using an alternate speaker system, you must use the
volume controls provided with that audio system or your media player.