Sony MDR DS4000 - Manual (Page 8)

Preparation
8 GB
1 Ear pad (left)
2 Battery case button
3 Battery case
Press the button of the left housing to
open the battery compartment lid.
This battery case is for the rechargeable
nickel-metal hydride batteries (supplied)
or commercially available (size AAA)
alkaline batteries only.
4 Infrared sensor
There are infrared sensors in two
locations on both sides.
5 Self-adjusting band
The headphones automatically turn on
when you put them on.
6 VOL (Volume) control
Use to adjust the volume.
7 Ear pad (right)
8 POWER indicator
By pulling up the self-adjusting band, the
indicator lights red when battery power is
sufficient.
Headphone Part Descriptions