GUANGZHOU U and I TECHNOLOGY BS228RK Users Manual
BS228RK
TWS Bluetooth Headset
User Manual
Bluetooth headset should be used with the compatible devices
which support Bluetooth wireless technology. This allows you to
make two calls and enjoy the music streaming at any time freely.
Please read this user manual carefully before using the headset,
and also read your device’s user manual regarding the Bluetooth
function, and pay attention to those important safety and
maintenance information.
Please keep the headset away from children.
Specifications
Bluetooth Version：
Bluetooth Profiles Supported：
Audio Decoding Protocol：
Transmission Power：
Operation Range：
Frequency Range：
Battery of Headset：
Charging Voltage of Headset：
Charging Time of Headset：
Battery of Base：
Charging Voltage of Base：
Charging Time of Base：
Charging Headset Times from
Charging Base：
Music Playing Time：
Talk Time：
Standby Time：
Driver：
Driver sensitivity ：
Driver impedance：
Driver frequency ring range：
Dimensions of Charging
Base(mm)：
Dimensions of Headset(mm)：
Weight(one headset)：
Total Weight ：
*The time mentioned above may vary due to user's operation mode and
device settings.
V5.0
HFP, HSP, A2DP, AVRCP
SBC, AAC, APTX
Class 2
Up to 10 meters
2.4GHz-2.48GHz
45mAH Li-polymer Battery
5V±0.2V
About 1.5 hours
420mAH Li-polymer Battery
4.75V-6V
About 2 hours
2-3 times
≥ 7 hours
≥ 7 hours
About 100 hours
φ6mm
90±3dB
16Ω±15％
20HZ-20kHz
L80×W33×H31
L26×W16.6×H24.2
About 4.5 g
About 53.8 g
Structure Sketch
5
3
4
7
1
2
1）
Charging Base Opening Snap
2）Charging Base Indicator
3）Micro USB Charging Port
Headset Mode
Status No. Status Charging Base Performance
Pairing Mode wtith
1
Bluetooth Device
2
TWS Pairing Mode
Standby Mode
3
Call Mode
4
Power On
5
Power Off
6
Low Voltage
7 The indicator light flashes red once every 20 seconds
Alarm State
The indicator light of headset flashes red and blue
alternately
The indicator light of headset flashes blue quickly
The indicator light of the headset flashes blue once every
5 seconds
When in a call, the indicator light of the headset flashes
red every 5 seconds
The indicator light flashes blue for three times.
The indicator light flashes red for three times.
Charging Base Mode
Status No. Status Headset Performance
1
2
Charging Mode of
the Charging Base
Charging Base
Baterry Indication
1.The indicator flashes red when being charged. The red
will flash according times until the battery is up to the
corresponding level.
2. No being charged or discharging to the earbuds, the
indicator is off
3.The indicator light is red when being fully charged
The indicator flashing red once every 2 seconds means
25% battery, twice means 50% ,3 times means 75% and 4
times means full battery(100%).
4）Indicator and Mic Hole
5）Touch Panel
6）Charging Pogo Pin
7）Ear Tips
6
Identify according to L&R and
wear the headset (R) and
headset (L) respectively
Wearing Steps:
Step①
Erect headset and place
them into the cochlea
Step②
Slightly rotate headset until it firm
Step③
Make the headset to cochlear edge tightly
Charging Ways of Headset
The indicator light of headset is
red when being charged, and
will turn off automatically after
being fully charged
Put the headset (L) (R) to the corresponding position in the bottom
of the charging base.
Charging Ways of Charging
Base
Use the USB charging
to charge
The red will flash according times
until the battery is up to the
corresponding level and will be
always on when it is fully charged,
cable
USB charging port
Use the USB cable to connect with computer
Use the USB cable to connect with
mobile phone charger
Check the charging device is suit to the headset or not.
Note 1:
Use only the supplied charger to charge the headset, if use
Note 2:
other device may violate the validation or the maintenance
article of this product and may cause danger.
Note 3:
Do not attempt to force open the built-in battery as this will
damage the headset.
A fully charged headset will lose its power automatically if left
Note 4:
unused. It is recommended to charge the headset each three
months.
Note 5:
Do not leave the headset in a too hot or too cold condition (best
between -10℃ and 50℃) which may affect the headset's operations
although it is fully charged.
Do not dispose of the headset into fire or water.r.
Note 6:
Turning ON/OFF
Method
Pick up the headsets from the charging base to turn on automatically.
Put them back to power off and charge the headset.
Method
In OFF MODE, touch headset(R) or headset(L) MFB for 2
seconds to turn on.
In ON MODE, touch headset(R) or headset(L) MFB for 5 seconds
to turn off.
Headset (L)
Headset (R)
TWS Pairing
Pick up the two headsets from the charging base to power on and
waiting for
few seconds
, the two headsets will enter auto-pairing
mode. The two headsets connect with each other after few seconds,
the headset (R) alternately flashing red and blue, and then open the
phone's bluetooth device to search“BS228RK”.
Note: When the first time to pairing or after delete the pairing
records, the headsets should be paired under 20cm unobstructed.
2s
In OFF state, touch MFB key for 2 seconds to power on and
waiting for
few seconds
mode. The two headsets connect with each other after few
seconds, the headset (R) alternately flashing red and blue, and
then open the phone's bluetooth device to search “BS228RK”.
Do as the above ways: 1 or 2 ,and it prompts ”Connected” after
TWS paired successfully: left headset prompts "Left connected"
and right headset prompts "Right connected-pairing"
ON
Bluetooth
BS228RK
Connect
Master-slave switching
The master and slave headset are automatically paired after being
turned on. The right headset is the master headset.
When the master headset is placed in the charging box, the slave
headset will automatically connect to the mobile phone and can be
used continuously.
When the left headset is turn on first and reconnected with mobile
phone , the left headset is the master headset.
When the right headset is turn on first and reconnected with
mobile phone , the right headset is the master headset.
Note: Single connection instructions: TWS and mobile pairing
records are required for single use.
, the two headsets will enter auto-pairing
Cell phone begins to search for bluetooth devices
(see the user guide of your phone instructions), and
select “BS228RK” from bluetooth device list.
the right headset prompts”Pairing successful”. the
left and right headset prompts :”dingdong”,and the
right headset prompts”Connected”.
After the right headset paired with mobile phone
successfully, the mobile phone will have a Bluetooth
pairing request (iphone must be connected to the
Bluetooth interface on the mobile phone), select the
match, and the left headset prompts “paring
successful”.
The master-slave switching function cannot be used
without matching the left earphone (L).
Note: When the headsets TWS pairing
failures, double touch the headset R and
headset L to enter TWS pairing, then pair
with phone.
TWS Reconnected
Touch MFB of headset(R) or headset(L) for 2 seconds to power on
Method1:
→wait for few seconds, the two headsets connect automatically→
the headset pairs with the mobile phone that has ever paired after
few seconds →reconnected successfully.
Method2:
Pick up the headsets from charging base to power on→wait for few
seconds, the two headsets connect automatically→the headset
pairs with the mobile phone that has ever paired after few seconds
→reconnected successfully.
Note: the right and left headset will prompt”Dingdong” after TWS
reconnected successfully, the right headset prompts”connected”
after reconnected with mobile phone successfully
TWS wake up
If there's no any operaons on headsets for more than one
minute, it requires to touch the headset to wake it up,then
connue for other headset operaons.
Answer /End a Call
When call incoming, touch MFB of headset (R) or headset (L) one
time to answer the call, when you hear “Di”
In call mode, touch MFB of headset (R) or headset (L) for 2
seconds to end the call when you hear “Di +Call End” .
in call mode,put one of headset into charging base, to end the call.
Reject a call
(1)Touch MFB of headset(R) or headset(L) for 2
seconds to reject the call, the headset prompts
“Didi, Call Reject”.
(2)When call incoming,put one of headset into
charging base, to end the call
Voice Dialing
On standby mode or music playing state, double
touch the MFB of headset(L) to activate this
function (double touch to start, double touch to
close)the headset prompts “Di”.
Note:This function only supports phone with
voice dialing function
Music Pause/Playing
In standby mode, touch MFB of headset(R or L)
to play music and the headset prompts “Di”.
On music playing state, double touch MFB of
headset(R) to PAUSE music and the headset
prompts “Di”.
Volume +/-
In call mode or music playing mode, single touch MFB of
headset(R) to volume up; single touch MFB of headset(L ) to
volume down,volume up do not have prompt, you will hear “Di”
form right headset when volume is up to maximum.
volume down do not have prompt, 1. in call mode, the right
headset prompt:”Di” when volume is up to minimum
.2. music playing mode, the left headset prompt:”Di” when volume
is up to minimum
Pre/Next Track
In music playing mode, touch MFB of headset(R) for 2 seconds
and release when the right headset prompt”Di” to next song;
touch MFB of headset(L)for 2 seconds and release when the left
headset prompt”Di”to previous song.
Delete Pairing Records on the Headset
In OFF mode, touch MFB of headset(R) or headset(L) about 8
seconds when you hear :”Di”, and double touch MFB until hearing
“Doo” 3 times to delete Pairing Records
Maintenance
•
Do not use abrasive cleaning solvents to clean the headset.
Do not allow the headset to touch with any sharp objects as this will cause
•
scratching and damages.
•
Please keep headset away from high-temperature, humidity and dust.
r
Trouble Shooting
Trouble Reasons Solutions
Can not turn on low battery protection Charging headsets for 1-2 hours
Can not turn on by picking
up the headset /No indicator
light when headset
charged
No sounds after
pairing
The two headsets TWS
pairing failure/TWS paired
successful but can not find
the headset(R)
Charging base without
indicator light when
charging
Headsets without
indicator light when
charging
Turning off
automatically
Headset echo Volume is too loud or
Noise in call
Low voice of the calling
party
Headphone operation
does not work
Play music from the
phone when
you touch the button
Charging base low battery
being
protection
Wrong pairing Pairing again
Too many pairing records Delete pairing records
DC power supply doesn’t
output power
The headsets couldn’t being
charged in charging base
Low battery Charging headset for 1-2 hours
environment is noisy
Environmental interference
caused or distance between
headset and mobile is too far
Wearing headset is wrong
Unprocessed left headset
pairing popup
Unprocessed left headset
pairing popup
Charging both the headsets and
charging base for 1-2 hours
Check whether the micro USB
charging
line is plugged well or
not
1)Checking headset charging interface
whether has touched to POGO PIN of
charging base and the location is
correct or not.
2)Charging for charging base
Adjust the volume at phone
change a place
Change a place or move the
headset close to the mobile
phone
Adjusting wearing position of
headset
TWS pairing after pairing is
cleared and connected to the
phone
TWS pairing after pairing is
cleared and connected to the
phone
NOTE: 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
Changes or modifications not expressly approved by the party
responsible for compliance could void the user's authority to
operate the equipment.
This device 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.
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