Sony PlayStation Portable PSP-1004 Instruction Manual page 22

Headphones with Remote Control
The Headphones with Remote Control are supplied with the Value Pack.
Remote Control front
A . button
B > button
C volume + button
Turns the volume up
D volume – button
Turns the volume down
E u button
AC Adaptor
A AC Adaptor
22 Part names and functions
Remote Control side
A HOLD switch
Locks the operation of the Remote
Control. Note that this button does
not lock the buttons of the PSP
system
B Clip
B AC Power Cord
®