Users Manual

Specifications
*The time mentioned above may vary due to user's operation mode and
device settings.
Structure Sketch
BS251FL
TWS Bluetooth Headset
User Manual
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 (TWS connect with mobile):
Driver:
Driver sensitivity :
Driver impedance:
Driver frequency ring range:
Dimensions of Charging
Base(mm):
Dimensions of Headset(mm):
Weight(one headset):
Total Weight :
Charging temperature :
Non-charging temperature :
Storage temperature :
1) Charging Base Lid
2) Charging Base Indicator
3) Charging Base-One-Key-
Reset Button
4) Type-C Charging Port
5) Headset Sound Port
6) Headset Indicator+ Side Mic Hole
7) Touch Panel
8) Headset- Mic Hole
Headset Mode
Charging Base Mode
Identify according L&R and wear the headset
(R) and headset (L) respectively
Step①
Wearing Steps:
Place headset into
the cochlea
Step②
Slightly rotate headset until
it firm
Step③
Make the headset to cochlear edge tightly
Charging Ways of Headset
Charging Ways of Charging
Base
Turning ON/OFF
left
Check the charging device is suit to the headset or not.
Note 1:
Note 2:
Note 3:
Use only the supplied charger to charge the headset, if use
other device may violate the validation or the maintenance
article of this product and may cause danger.
Do not attempt to force open the built-in battery as this will
damage the headset.
Note 4:
Note 5:
A fully charged headset will lose its power automatically if
unused. It is recommended to charge the headset each three
months.
Do not dispose of the headset into fire or water.r.
Method
Method
1. When the TYPE-C charging interface access to power, the
indicator light red when being charged, and turns to green
automatically after being fully charged.
Bluetooth headset should be used with compatible devices which
support Bluetooth wireless technology. This allows you to make
any calls with Bluetooth function 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.
Put the headset (L) (R) to the corresponding position of the
charging base.
Status No.
Status
Indicator
Prompt
1
1
2
2
3
3
5
4
7
Flashes white quickly once every
0.2 seconds
The indicator light flashes white
slowly once every 1 second
Power On
"Power on"
"Power off"
Power Off
TWS Pairing Mode
TWS Connected
Phone Pairing
Mode
Phone Connected
Low Battery Alarm
State
Reset
Headset Charging
Flashes red for 3seconds(reset) and
white quickly 5 times
White being charged, turns off after
fully charged
" Low Battery "
(once every 3
minutes)
The indicator light of master headset
flashes white once every 1 second
and slave headset flashes white
once every 5 seconds
The indicator light of the headset
flashes white once every 5 seconds
8
9
/
/
/
/
/
/
6
Headset (R)
Headset (L)
TYPE-C Charging port
Use the Type-C cable to connect with computer
Use the Type-C cable to connect
with mobile phone charger
V5.0
HSP, HFP, A2DP, AVRCP
SBC, AAC
Class 2
Up to 10 meters
2.4GHz
40mAH Li-polymer Battery
DC 5.0V±0.25V
≤2 Hours
300mAH Li-polymer Battery
DC 5.0V±0.25V
≤2 Hours
About 3 times
≥4 Hours（50% volume）
≥3 Hours（50% volume）
＞60 Hours
φ12mm
102±3dB(at 1KHz)
16Ω±15%
20Hz-20kHz
L51.2×W59.3×H23.1
L43.45×W16.8×H17.5
About 3.9g
About 38.5g
0°C~45°C
-10°C~60°C
-20°C~40°C
7
6
8
4
1
2
3
5
"TWS connected"
(if first time pairing)
"Pairing"
“Connected”
Charging Base PerformanceStatus No. Status
Charging Base
Charging
Red when being charged, turns to green after fully charged
Charging Base
charging for
headsets
Charging base flashes green for 3 times if found the
headsets put inside ( finish within 1.5s)
Charging Base
Battery Capacity
Open the lid or press the ③ button, indicator show different
battery capacity for 2 seconds, red is less than 20%, orange
between 20%-79% and green if more than 80%
Turn ON: Open the charging base lid
to turn on automatically. (It is advised
to pick up the headset after open lid
for 1 second)
Turn OFF: Put the headset back to
the charging base and close the lid
for 1 second to turn off and charge. (It
is advised not to open and close the
lid too frequently)
Turn ON: In OFF MODE, touch the
panel of headset(R) or headset(L) for
2 seconds to turn on.
Turn OFF: Headset will turn off
automatically after the headset(R) or
headset(L) disconnected from device
for 5 seconds.
Headset is charged once put in
charging base, charging base
indicator flashes green 3 times.