See also:

Hard Drive Device (HDD)
To use the HDD, tracks must be recorded from a CD, MP3 Disc, or USB device first. ...

Battery Replacement
To change the batteries: 1. Loosen the screw to the battery door located on the left side of the headphones. 2. Slide the battery door open. 3. Replace the two AAA batteries. 4. Replace the bat ...

Braking
Braking action involves perception time and reaction time. Deciding to push the brake pedal is perception time. Actually doing it is reaction time. Average driver reaction time is about three-quart ...