3
4
0
〜
10
％
10
〜
90
％
90
％〜
100
％
Red
Yellow
Green
Power/Charging
Power/Charging
Charging the charging case:
Connect the accessory USB charging cable (C) connector to the USB port on the charging case
and connect the USB (A) connector to an electrical appliance or adapter with the same shape of
connector and the internal battery within the charging case will begin to charge. While charging,
the LED indicator light will flash in different color depending on the power level of the battery.
Battery Remaining
Green LED lights up
Refer to the table above
Orange LED turns off
Orange LED lights up
Charging
Charging completed
Charging the charging case
Charging the earphones
Charging the earphones:
Insert the earphone units into the charging case and they will begin to charge.
When the power is OFF, press the MFB button once to switch the power ON.
Turning on the earphones
After charging, remove the earphones from the charging case and the power will automatically
switch ON. (When the LED indicator lights up in white for 1 second, the power is ON.)
Press and hold the MFB button for about 3 seconds until two types of beep sound emanate, and
the power will switch OFF.
When the charging case is adequately charged, returning the earphones to the charging case
will automatically switch the power OFF and charging will begin.
Turning off the earphones
The first time the earphones are used:
1. Remove the left and right earphones from the charging case, and they will automatically be in
pairing mode. (The LED indicator at left flashes between orange and white.)
2. Switch the Bluetooth function on the smartphone or other device ON and select [TWS04K_L]
*1
once it appears on the display.
3. A [Bluetooth pairing request] from the other side earphone will appear on the display, please
select [pairing] or [OK]. (The display varies depending on the smartphone or other device to
which it is connected.) When the following appears on the display of the device being
connected, left/right pairing has been completed.
*1: In the case of TWS04K-WH, [TWS04K-WH_L] will be displayed.
To reestablish pairing or to perform pairing with a second or later device:
1. Remove the earphones from the charging case and the LED indicator will light up white for 1
second as the power automatically switches ON.
2. Press the MFB button twice on one side of the earphones to switch to pairing mode. (LED
indicator flashes between orange and white.)
3. Switch the Bluetooth function on the smartphone or other device ON, and select either
[TWS04K_L] or [TWS04K_R]
*2
once it appears on the display.
4. A [Bluetooth Pairing Request] from the other side earphone will appear on the display, please
select [Pairing] or [OK]. (Varies depending on the smartphone or other device to which
it is being connected.) Left and right pairing has been completed when any of the messages
below have been displayed.
*2: In the case of TWS04K-WH, [TWS04K-WH_L] or [TWS04K-WH_R] will be displayed.
* Before performing pairing with a new device, please disconnect the device to which it has already
been paired or switch the Bluetooth function OFF on the device to which it has already been paired.
* If Connected is displayed for
either side, pairing has succeeded.
* The side for which connected is
displayed is the parent earphone.
To connect to your smartphone or other device initially, it is necessary to perform pairing.
For devices which have already completed pairing, a connection will automatically be
established the next time the power is switched ON.
Performing device pairing
TWS04K_L
Setting
Device
TWS04K_L
TWS04K
TWS04K_R
Connected
Not connected
TWS04K-WH
Connected
Not connected
TWS04K-WH_L
TWS04K-WH_R