Digitalk EI-F37B User manual

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User’s Manual
Portable Multifunction Bluetooth Voice Amplifier/Loud Speaker
Model: EI-F37B
Thank you for purchasing this product
For proper usages and application
Please read this instruction manual thoroughly

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Notes:
1. Avoid using the voice amplifier near water, or immersing it into any liquid.
2. Don’t use the voice amplifier in a place with high temperature.
3. Adjust the volume in a comfortable level, to avoid damaging your health and the device.
4. When you use the device for the first time, please run out of the battery power before recharge.
If the device is not used for a long period, please refill the battery every two months.

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Product highlights
Professional voice amplification, and super wide sound field.
Voice loud and clear. suitable for teachers, tour guides, public speakers, exercise instructors,
tradeshow demonstrators, athletic coaches, and all outdoor activities.
High-end microphone, no screaming noise.
Equipped with high-end microphone, clear voice, and comfortable wearing.
Support TF card and USB flash drive
mp3, wav, wma format music play.
FM radio
Support automatic search of radio stations.
One touch recording
As long as the U-disk or TF card is inserted, press the REC button to start recording.
Number keys (0-9)
Direct music and radio selection, time-saving and convenient
Rechargeable Lithium-ion battery
Built in with high capacity 18650 Lithium-ion battery. Reliable quality, secure operation.

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Operation Instructions
1.Power and Volume Control knob:
Rotate the knob clockwise to “on” to turn on the device, rotate the knob anticlockwise to “off” to
turn off the device. After the device is turned on, rotate the knob clockwise to turn up the
volume; rotate the knob anticlockwise to turn down the volume.
2. USB :
Insert U-disk(with mp3,wav,wma format files) into the USB port.
3. Micro SD :
Insert Micro SD card (with mp3,wav,wma format files) into the Micro SD port.
4. Number keys (0-9):
(1)When the USB or TF card is inserted, you can choose the music you want. For example,
press the number 1,0,8 successively to choose the 108th music.
(2) When listening to the radio, you can choose the radio frequency easily. For example, press
8,9,5 to choose the radio frequency 89.5MHz
5. Antenna :
Pull out the antenna to its full length while enjoying FM radio.
6. :
Plug the earphone into the port while enjoy music or radio.
7. MIC
(1) Plug an external speaker/microphone into the MIC port for synchronic speaking.
(2) Commonly used 3.5mm Aux-in port. Use an audio cable to connect external audio device(eg
MP3,CD player, mobile phone, computer, etc) with the amplifier for voice amplification.
8.
(1)While playing the mp3 music, press the button to pause music playing, the second press to
continue music playing.
(2)While listening to the radio, short press the button to turn off the volume. The second press
to recover. Continuous press the button for automatic search radio stations.
9.
(1)During Micro SD card or USB music playing, short press the button to switch to the previous
song, continuous press to rewind to music;
(2)While listening to the radio, short press the button to switch to previous radio station.

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10.
(1)During Micro SD card or USB music playing, short press the button to switch to the next
song, continuous press to wind the music forward;
(2)While listening to the radio, short press the button to switch to the next radio station.
11.
While playing Micro SD card or U-disk mp3 music, short press the button to repeat one piece of
the mp3 music, continuous press to repeat all mp3 music.
12. FM
Press the button to switch to radio mode
13. REC
When the TF card or U-disk is inserted, press the button to start recording, and the second
press to end recording.
14.
MODE
Short press the button to switch among FM radio, Micro SD card and USB. The button is
available only when the Micro SD card or USB is inserted.
15. LED indicator
The LED indicator will give out light while playing music or recharging, once the battery is
refilled, the LED indicator turns dark.
16. DC 5V
Connecting the device with the provided power adaptor via the port to charge for the device.
(Never charge the device while it’s still working) . The usual refill time is about 4-6 hours.
*** The above functions and keys are for your reference. For more detail, please refer to the actual
products.
Notes
1. While the external microphone/ speaker is on, keep it at least 0.3 meter away from the voice
amplifier in order to avoid screaming noise.
2. MIC port only accepts the 3.5mm microphone connector.
3. If the device is not used for a long time, refill the battery every 2 months.
4. For secure operation, please do not use the power adaptor besides the provided one.
5. Don’t disassemble or try to repair the device. Warranty may be voided.

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Solutions to Common problems
Ask: My device cannot give out voice, what should I do?
Answer: If the device fails to give out voice, don’t worry. Please check the following items
(1) Whether the microphone is inserted in the wrong position.
(2) Whether the power knob is in the “on” position.
(3) Whether the battery has run out of electricity.
Ask: Why the device gives out screaming noise?
Answer: In order to avoid screaming noise, please notice the following items:
(1) Wearing the microphone correctly, and keep it at least 0.3 meter away from the voice
amplifier.
(2) Adjust the volume to an appropriate level, the screaming noise appears while the
volume is in a high level or the microphone and voice amplifier is kept in a relatively
close position
Ask: What is the service life of the battery? Can it be replaced?
Answer: The service life of the rechargeable Lithium-ion is usually over 1 year. It can be replaced.
Ask: What to do if the FM radio failed to receive radio programs?
Answer: Please make sure whether the area is covered by FM radio signal or not; or whether you
have automatically searched the radio stations or not.

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Technical Parameters
F1
Dimension 119*91*43mm
Weight 279g
Support music format Mp3,WAV,WMA
Speaker impedance 2Ω
SNR 80dB
Frequency response 100Hz---13,000Hz
Input signal Microphone(600Ω)
Charger output 5V/500mA
Battery specification DC3.7V/1800mA
Microphone sensitivity -52dB

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F11
Dimension 131*91*49mm
Weight 285g
Support music format Mp3,WAV
Speaker impedance 2Ω
SNR 80dB
Frequency response 100Hz---13,000Hz
Input signal Microphone(600Ω)
Charger output 5V/500mAh
Battery specification DC3.7V/1200mAh
Microphone sensitivity -52dB

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Warranty Statement
“Our goods come with guarantees that cannot be excluded under the Australian
Consumer Law. You are entitled to a replacement or a refund for a major failure and
for compensation for any other reasonably foreseeable loss or damage. You are also
entitled to have the goods repaired or replaced if the goods fail to be of acceptable
quality and the failure does not amount to a major failure”
Warranty claims can be made by contacting place of Supply or Globalcom Industries
Pty Ltd.
Name: Globalcom Industries Pty Ltd
Telephone number: 02 97488988
Email Address: [e-mail]
Business address: Unit A3, 27-29 Fariola Street,
Silverwater NSW 2128
This product is warranted for 12 months from date of purchase.
Original tax invoice or proof of purchase required when claiming warranty.