Bluetooth Headset
With MP3 Player
MP3
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MP3
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Before to use the product, please read carefully this manual to avoid any malfunction. The info in this manual is
shown as reference. Due to updates can exist differences. Consult our website
www.stern.com
to obtain the most
actual version of this manual.
• This product is NOT a toy; keep it away from children.
• Adjust the volume to a level that allows you to hear important external
sounds.
• Do Not place heavy objects over the headhones.
"The operation of this equipment is subject to the following two conditions: (1) it is
possible that this equipment or device may not cause harmful interference and (2)
this equipment or device must accept any interference, including interference that
may cause its undesired operation ".
BATTERY CHARGE
Before first use, charge the battery for 3
continuous hours.
During the charge the LED remains lights on
in red color and will off when the battery is
fully charged
Option 1 Option 2
AC adapter and micro USB cable
are not included
PARTS
BLUETOOTH MODE
Micro SD card slot
Micro USB
connector
Backward/Volume -
3.5 mm input
Indicator LED
On
Off
Forward
Multifunction
button
Mode
button
Microphone
1. Press for a few seconds to turn on the headphones.
The LED will flash in red and blue.
2. Activate the bluetooth in your mobile device and select:
“STEREN AUD-781”
.
If the pairing is successful, you will hear a tone and the LED
will remain flashing in blue.
3. Start the audio playback from your mobile device.
MUSIC PLAYBACK
Press once
Press once
Press once
Press and hold
Press and hold
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HANDSFREE
Press once = Answer / Hang up
Press and hold = Reject call
Press twice = Redial
MICRO SD MODE
1. Press to turn on
the headphones.
2. Insert a micro SD
card with MP3 audio
files into the
corresponding
input.
The playback will
start automatica-
lly
Press to
change mode
(Bluetooth/micro SD)
MP3
USING WITH AUXILIARY CABLE
Insert a 3.5 mm cable into the
corresponding input
SPECIFICATIONS
Input: 5 V - - - 500 mA (x USB)
Battery Capacity: 120 mAh 3.7 V - - -
Audio:
Frequency Response: 20 Hz - 20 kHz
Speaker Sensitivity: 115 dB +/- 3 dB
Impedance: 32 Ohms
Unit: 40 mm
Power: 40 mW
Microphone:
Frequency Response: 50 Hz - 16 kHz
Sensitivity: -58 +/- 3 dB
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The compatibility of the hands free and playback music
functions depends of the model and OS of your
mobile device
and the other end connect it into
an audio device.
Specifications may change
without notice