SRF-H4, 3-261-881-11(1) US
© 2003 Sony Corporation
Printed in China
"WALKMAN" is a registered trademark of Sony Corporation
to represent Headphone Stereo products.
is a registered trademark of Sony
· Operate the unit only on 1.5 V DC with one size
AAA (R03) battery.
· Avoid exposure to temperature extremes, direct
sunlight, moisture, sand, dust, or mechanical shock.
Never leave in a car parked under the sun.
· Should any solid object or liquid fall into the unit,
remove the battery and have the unit checked by a
qualified personnel before operating it any further.
· In vehicles or buildings, radio reception may be
difficult or noisy. Try listening near a window.
· To clean the casing, use a soft cloth dampened with
a mild detergent solution.
Notes on Headphones
Do not use headphones while driving, cycling, or
operating any motorized vehicle. It may create a
traffic hazard and is illegal in many areas. It can also
be potentially dangerous to play your headphones at
high volume while walking, especially at pedestrian
crossings. You should exercise extreme caution or
discontinue use in potentially hazardous situations.
Preventing hearing damage
Avoid using headphones at high volume.
Hearing experts advise against continuous, loud and
extended play. If you experience a ringing in your
ears, reduce volume or discontinue use.
Caring for others
Keep the volume at a moderate level. This will allow
you to hear outside sounds and to be considerate to
people around you.
If there is lightning when you are using the unit, take
off the headphone radio immediately.
If you have any questions or problems concerning
your unit, please consult the nearest Sony dealer.
FM: 87.5 108 MHz
AM: 530 1 710 kHz
6 mW + 6 mW (at 10% harmonic distortion)
1.5 V DC, one size AAA (R03) battery
Approx. 122.5 g (4.3 oz) incl. a battery
Design and specifications are subject to change
This warranty is valid only in the USA.
You are cautioned that any changes or modifica-
tions not expressly approved in this manual could
void your authority to operate this equipment.
For customers who purchased this product in the
Please register this product on line at
Proper registration will enable us to send you
periodic mailings about new products, services,
and other important announcements. Registering
your product will also allow us to contact you in
the unlikely event that the product needs
adjustment or modification. Thank you.
· Compact and light weight stylish design
· Double adjustable headbands for added stability and
· FM Flexible antenna with light reflector
· MEGABASS for dynamic bass sound
· FM SENS DX / LOCAL selector for better
Printed on 100% recycled
paper using VOC (Volatile
vegetable oil based ink.
SRF-H4, 3-261-881-11(1) US
Battery (See Fig. A)
1 Open the battery compartment lid and
install one size AAA (R03) battery (not
supplied) with correct polarity.
2 Close the lid.
When to replace the battery
Replace the battery when the sound becomes weak or
distorted. Remove the old battery and insert a new one.
Battery life (Approx. hours)
size AAA (LR03)
Sony size AAA
* Measured by JEITA (Japan Electronics and
Information Technology Industries Association)
standards. The actual battery life may vary
depending on the circumstance of the unit.
Notes on battery
· Do not charge the dry battery.
· Do not carry the dry battery together with coins or
other metallic objects. It can generate heat if the
positive and negative terminals of the battery
accidentally come into contact with metallic objects.
· When you are not going to use the unit for a long
time, remove the battery to avoid damage from
battery leakage and corrosion.
If the battery compartment lid
comes off (See Fig. B)
The battery compartment lid is designed to
come off when opened with excessive force.
To put it back on, see the illustration.
Insert the right hook of the lid into the right
hole in the unit.
Hang the left hook on the left part of the
FM: Set BAND to LOCAL if interference is prevalent
and reception is too strong. Under normal
conditions, set it to DX.
AM: Move around to obtain better reception.
Playing the Radio
1 Set POWER to ON.
2 Set BAND to select FM or AM.
3 Turn TUNING to tune in to a station.
4 Adjust VOL (volume).
To turn off the radio, set POWER to OFF.
To obtain powerful bass sound
Set POWER to MEGA BASS.
The "MEGA BASS" system produces a powerful bass
When the sound becomes distorted, switch POWER
Size AAA (R03) x 1
Insert the # side of the
Adjust it to
* There is Tactile dot beside volume to show the
direction turn up the volume.
This reflector reflects
car light at night for