NINGBO CSTAR IMP and EXP 0019 User Manual

171mm

104mm

SL074

True Wireless Bluetooth Earbuds + UL Power Bank

Each Headset can be used separately

Earbuds

Earbuds

IMPORTANT SAFETY PRECAUTION

Power Bank

WARNING – When using this product , basic precautions should
always be followed, including the following:

1. Read all the instructions before using the product.

2. Power bank main unit contains an internal lithium ion battery.
Upon initial use or after a prolonged storage period, fully charge it
once. The unit’s full performance is achieved only after 2 or 3
completed charge and discharge cycles.

3. Power banks are not allowed in checked luggage on commercial
airline flights. Handle with care and dispose of in accordance to local
regulations. Carry-on only.

4.To reduce the risk of injury, close supervision is necessary when the
product is used near children.

5. Do not put fingers or hands into the product.

6. Do not expose power bank to rain or snow.

7. Use of a power supply or charger not recommended or sold by
power pack manufacturer may result inarisk of fire or injury to
persons.

Charging

The bluetooth earbuds and charging cradle must be fully charged
before first time to use.

Charge the bluetooth earbuds

Magnetic contact recharging, the LED indicator will be solid red
when charging, and will turn into blue when the earbuds fully charg.

Note:

1. When you playing the music, blue LED
light flashed slowly.

Charging the power bank

Use the USB cable to connect the adaptor or computer
USB socket to charge the power bank.

01 02 03 04

The indicator will be lighted
blue if it's fully charged.

5V1A

05 06 07 08

SL074

earbuds

Take out

PUSH

Power Bank

8. Do not use the power bank in excess of its output rating. Overload
outputs above rating may result inarisk of fire or injury to persons.

9. Do not use the power bank that is damaged or modified. Damaged
or modified batteries may exhibit unpredictable behavior resulting in
fire, explosion or risk of injury.

10.Do not disassemble the power bank. Take it toaqualified service
person when service or repair is required. Incorrect reassembly may
result inarisk of fire or injury to persons.

11.Do not exposeapower pack to fire or excessive temperature.
Exposure to fire or temperature above 100°C may cause explosion. The
temperature of 100°C can be

12.Have servicing performed byaqualified repair person using only
identical replacement parts.This will ensure that the safety of the
product is maintained.

13.Do not charge the power bank while using the power bank to charge
a device. Do not charge the power bank for more than 4-6 hours and
do not leave unattended.

14.Disconnect the power bank when not in use.

Earbuds：

Earbuds

Single earbuds operation

Power on/ Power off

Power on: Long press the Multifunction button for about 3 seconds,

the indicator lights red once and you will hear a warning tone.

Power off: Long press the Multifunction button for about 5 seconds,

the red LED will light once,then turn off. You also will hear a
warning tone.

Pairing：first time to use

In power off status, long press the multifunctional button for 5

seconds, the indicator lights will flashes red and blue alternately.
then turn on your cellphone bluetooth, search“SL074” and
click connecting, It will pair automatically.

replaced by the temperature of 212°F.

Earbuds

Earbuds

Earbuds

3 seconds 5 seconds

Power on

5 seconds

Power off

Earbuds

ON

Bluetooth

SL074

Connect

Accessories

Earbuds

Left Right

Large

Medium

Ear Tips

Small

Power bank

USB charging cable

Graphical Representation

1. Multifunction button

2. Microphone and
LED indicator

3. Ear Tips

4. Power bank

5. USB input

6. Power Bank
LED indicator

7. USB output

Once the earbuds is successfully paired and connected with your
mobile phone, you can use it to make a call and listen music.

Answer call/End call: Press the control button once to answer
the incoming call. Press the control button once to end a call.

Reject call: Double press the control button to reject
the incoming call.

Redial: Press the control button for 2 seconds to redial the last

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number you called on your phone.

Music: short press Multifunction button to pause music/play

7

music.

1

4

5

2

6

3

Stereo earbuds operation

Power on

Long press the Multifunction button for about 3 seconds, the
indicator lights red once and you will hear a warning tone.

3 seconds

Power on

7

2746

User manual

User manual

4

FIT

In order to get best audio performance, Try every eartips
( small, medium and large), The correct seal in your ear to
achieve optimal fit and stability.

+

In order to get better signal distance, please wear earbuds as
below pictures showed, Multifunction button round end should
towards to mouth direction.

Left earRight ear

Power off: power off one earbuds only

Press and hold the Multifunction button for 5 seconds the
LED will be lighted red and a notification sound will be heard
accordingly, Only need to power off one earbuds, the other
one will power off automatically if two earbuds connected.

Pairing: first time to use

1. In power off status, press and hold the Multifunction buttons
of two earbuds at the same time for 5 seconds, the red and
blue LEDs will flash alternately, put two earbuds close each other .

Please do not click any one of them to pair.

5 seconds

Connecting

2. Two earbuds will pair to each other automatically, after then
one earbuds blue LED flashes slowly, another earbuds LED flashes
red and blue alternately, at this time you can see only one “SL074”
in your phone.

Master earbuds

Connected

Search and connection

When master earbuds flashs red and blue alternately, Please wait
several seconds until only one “SL074”shows in your phone then
click to connect, It will pair automatically.

ON

Bluetooth

SL074

Master earbuds

Notice:
Please do not click “SL074” to connect before two earbuds
connected to each other. Otherwise the stereo function is not available.

Warning

1. Do not put the product at the environment of too low or too
high temperature for a long time, that may cause deformation,
reduce the battery capacity , even shorten service lifetime.

2. Do not use the device when the thunderstorm coming, may cause
a failure, and Increase the risk of struck by lightning.

3. Do not remove or modified earbuds for any reason, otherwise
may lead to earbuds fault or burned, please send earbuds to
authorized service center for repairs.

4. Place the device and all accessories out of the reach of children
and pets, small parts may be swallowed cause suffocation and
serious consequences.

5. Do not put the earbuds into the water.

Troubleshooting

Phenomenon Reason Solution

low battery

Starting-up failure

No sound after

wrong paired re-pairing

paired

No indicator

Earbuds didn’t put into

during charging

the charging cable well

Shut down

low battery charge for the earbuds

automatically

environment disturbance or

Noise during

headphone is too far away

phone calls

from device

Low volume of

wrong wear of headphone adjust headphone position

the caller

environment disturbance or

Signal is not well,

headphone is too far away

interrupting

from device

Connect

09 10 11 12

charge for the earbuds

check the earbuds if it’s
well put into

change environment or
shorten the distance between
headphone and device

far away from the interference
signal or shorten the distance
between headphone and device

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Pairing successful

Master and slaver earbuds LED flash blue slowly after paired
successfully, only one “SL074”show in your phone it means
connected already. (For the paired previously earbuds and cellphone
the earbuds will connect automatically after you power on)

Master Slaver

Calling

6

Only that Mast earbuds can hear the voice when calling and only
the button of it can work.

Answer call/End call:

Press the control button once to answer the incoming call.
Press the control button once to end a call.

Reject call:

Double press the control button to reject the incoming call.

Redial:

Press the control button for 2 seconds to redial the last
number you called on your phone.

Play music

7

Master

Play music: Press any one of the Multifunction button once
to play music.
Pause music: Press any one of the multifunction button once
to pause music.

FCC STATEMENT

This equipment has been tested and found to comply with the limits for
a Class B digital device, pursuant to part 15 of the FCC rules. These limits
are designed to provide reasonable protection against harmful
interference in a residential installation. This equipment generates, uses
and can radiate radio frequency energy and, if not installed and used in
accordance with the instructions, may cause harmful interference to
radio communications. However, there is no guarantee that interference
will not occur in a particular installation. If this equipment does cause
harmful interference to radio or television reception, which can be
determined by turning the equipment off and on, the user is
encouraged to try to correct the interference by one or more of the
following measures:

-Reorient or relocate the receiving antenna.

-Increase the separation between the equipment and receiver.

-Connect the equipment into an outlet on a circuit different from that to
which the receiver is connected.

-Consult the dealer or an experienced radio/TV technician for help.
To assure continued compliance, any changes or modifications not
expressly approved by the party.
Responsible for compliance could void the user’s authority to operate
this equipment. (Example- use only shielded interface cables when
connecting to computer or peripheral devices).
This equipment complies with Part 15 of the FCC Rules. Operation is
subject to the following two conditions:
(1) This device may not cause harmful interference, and
(2) This device must accept any interference received, including
interference that may cause undesired operation.
RF warning statement:
The device has been evaluated to meet general RF exposure
requirement.
The device can be used in portable exposure condition without
restriction.

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Slaver

Play music: Press any one of the Multifunction button once
to next song.

Power bank LED Indicator

Status LED Indicator

Flash (red)

Charging

Lit (red)

Fully charged

Lit (blue)

Working

Charge for digital products

5V1A

Specifications

Items Specifications

Earbuds Battery Button cell 40mAh

Bluetooth Version V4.1

Working voltage 3.7V-4.2V

Microphones sensitivity -42±3db

Bluetooth frequency brand 2.4-2.48GHZ

Bluetooth range 10M

Audio transmission protocols A2DP/HFP/HSP/AVRCP

The Bluetooth® word mark and logos are registered trademarks
owned by Bluetooth SIG, Inc. and any use of such marks by (xxxx) is
under license. Other trademarks and trade names are those of their
respective owners.

ITE: Accessories Lithium ion battery UL 2056 certified

FCC ID : 2ABHA0019

Bluetooth Listing Declaration ID:XXXXXX Made in China

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Power Bank

Model
Item No
Input
Maximum input
Output
Battery/Cell capacity
Product capacity
Operating temperature

EN
CAUTION: Risk of Fire and Burns, don’t open, crush, disassemble and

dispose of in fire. Accessible surfaces held or touched for short periods only.
Don’t heat above 50 °C or Incinerate. Follow Manufacturer’s Instructions

FR
DANGER: risque d’incendie et de brûlures, ne pas ouvrir, démonter, écraser
ni jeter au feu. Ne pas toucher ou tenir les surfaces accessibles sur une
longue durée.Ne pas chauffer au-dessus de 50 ° C. Instructions de fabricant
Suivre

Notice

1. The mobile can not find the earbuds if the 2746 is not paired.
Please ensure the earbuds is in pairing model before you search it.
(red and blue lights flashing alternately)

2. If the earbuds can not find any pairing device for five minutes,
it will power off automatically.

Warm tips

You must select a qualified adapter to charge this product.
You must charge the bluetooth earbuds if it has not been used
for more than 3 months.

SL074
2746
DC 5V/1000mA
DC 5.3V/1000mA
DC 5V/1000mA,60mA,60mA

7.4Wh , 3.7V / 2000mAh

5.5Wh , 5V / 1100mAh
0~45°C tor Charging
0~50°C for Discharging

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