See also:

Resetting
If the battery has been disconnected, the auto open function must be reset so that it will work properly. 1. Gently raise the front section of the button to close the window and hold it for one s ...

Symbols and messages in the display
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Replacing batteries in the headphones
The headphones use two AAA batteries. It is advisable to have extra batteries on hand during long trips. Battery cover and retaining screw 1. Unscrew the retaining screw and remove the batter ...