Sony Xplod CDX-GT56UI Operating Instructions Manual page 3

MPEG Layer-3 audio coding technology
and patents licensed from Fraunhofer IIS
and Thomson.
Note on the lithium battery
Do not expose the battery to excessive heat
such as direct sunlight, fire or the like.
Warning if your car's ignition has no
ACC position
Be sure to set the Auto Off function
(page 19). The unit will shut off
completely and automatically in the set
time after the unit is turned off, which
prevents battery drain. If you do not set
the Auto Off function, press and hold
 until the display
disappears each time you turn the
ignition off.
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