Sony MV-900SDS Operating Instructions (primary manual) Operating Instructions Manual page 12

Cordless Stereo Headphones MDR-IF0140
1 Battery compartment lid 39
To set a battery, open the lid.
2 Ear pad 40
The ear pads are replaceable.
3 Power (ON/OFF) switch 18
4 POWER indicator 18
When the power switch of the headphones
is set to ON, the POWER indicator lights
up in red.
5 VOL control dial 18
To adjust the volume level from 0 to 10.
12
Battery life
Size AAA dry battery (1) is supplied with the
headphones.
Battery
Sony alkaline battery
LR03/AM-4 (N)
Sony manganese battery
R03/UM-4 (NU)
1 at 1 kHz, 1 mW+1 mW output
*
2 Time stated above may vary, depending on the
*
temperature or conditions of use.
Tip
Refer to "Replacing the battery" for details on
how to replace the battery (page 39).
Approx. hours* 1
2
60 hours*
2
28 hours*