COTSUBU 27010E True Wireless Earbuds User Manual

COTSUBU 27010E True Wireless Earbuds

Package contents

Part name

Initial Setup

Remove both the left and right earphones from the charging case and peel off the insulation plastic strips which are initially attached to the metal contact at the back of the earphones.

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 of the charging case will flash/lights up in a different color depending on the battery power level of the charging case as shown in the table below.

Charging the earphones:
Insert the earphone units into the charging case and close the charging case, the earphone units will start charging. Once the charging case is closed, the LED indicator light of the charging case will light up in a different color depending on the battery power level of the charging case as shown in the table below.

Turning on the earphones

After charging, open the charging case and the power of the earphones will automatically switch ON. When the LED indicator of the earphones lights up red for 3 seconds, the power is ON.
(When the earphones are fully charged, the LED indicator of the earphones lights up green for 1 second then turns into red for 3 seconds)
When the charging case is opened, the LED indicator light of the charging case will light up in a different color depending on the battery power level of the charging case as shown in the table below.

When the power is OFF, tap the touch control panel one time and the power will turn ON.

Turning off the earphones

Touch and hold the touch control panel 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 and closing the charging case will automatically switch the power OFF and charging will begin. The LED indicator light of the charging case will light up in a different color depending on the power level of the battery as shown in the table below.

Performing device pairing

To connect to your smartphone or other devices initially, ii 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.

The first time the earphones are used:

1. Open the charging case, the LED indicator on the earphones will light up in red for 3 seconds and the power will automatically switch ON. Then, they will automatically switch to the pairing mode with the LED indicator on one of the earphones flashes between green and red.
2. Switch the Bluetoolh function on the smartphone or other devices ON and select [COTSUBU] once it appears on the display. When [COTSUBU ConnectedJ- appears on the display of the device being connected, pairing has been completed.
   The content displayed differs depending on the user interface of the smartphones or other devices.

To reestablish pairing or to perform pairing with a second or subsequent devices:

1. 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.
2. Open the charging case, the LED indicator on the earphones will light up in red for 3 seconds and the power will automatically switch ON. Then, they will automatically switch to the pairing mode with the LED indicator on one of the earphones flashes between green and red.
3. Switch the Bluetooth function on the smartphone or other devices ON and select [COTSUBU] once it appears on the display. When [COTSUBU Connected]* appears on the display of the device being connected, pairing has been completed.
   The content displayed differs depending on the user interface of the smartphones or other devices.

Operation of Touch Control Panel

Music

| Playback| Tap 1 time
Pause| Tap 1 time
Next Track

Previous Track

| –

Touch and hold until beeo sound emanates

| Touch and hold until beep sound emanates

–

Raise Sound Volume| Tap 2 times| –
Lower Sound Volume| –| Tap 2 times

Incoming Calls

| Receive Call| Tap 1 time
End Call| Tap 1 time or return either one of the earphones to the charninn case
Refuse Call| Tap 2 times
Siri/ Goocle Assistant| Initialize| Tap 2 times (Only while music playback is stopped)

Depending on the device to which connected, this function may not be available.

Factory reset method

When pairing has not been successfully completed or unexpected error has occurred, please perform the factory reset by the following procedures stated below. Once the factory reset is completed, please attempt another pairing operation.

1. Insert the left and right earphones into an adequately charged charging case then touch and hold the touch control panel on both sides simultaneously for 10 or more seconds. When the LED indicator of both sides light up in green, release the fingers off from the touch control panel.
2. After a certain amount of time, the earphones will automatically switch to the pairing mode with the smartphone or other devices with the LED indicator on one of the earphones flashes between green and red. In this situation, the factory reset has been completed.
3. When the factory reset is completed, the earphones will be in the factory default state with all previous pairing information with the smartphone or other devices deleted. Please perform pairing again with the smartphone or other devices after removing the previous pairing record on the smartphone or other devices.

About the ear tips

When bass is difficult to hear and high range sound jars the ear, there is a possibility that the ear tip fit is not appropriate. In order to enjoy music in accordance with the design of the earphone, it is important that the ear tip fits properly and there is a means of sealing the ear canal. In order to achieve the proper fit, please try the following methods:

• If there is any fitting discomfort with the default ear tips, please try with Sor SS ear tips.
• Some users might have different ear canal sizes for the left and right ears. To achieve perfect fitting on both ears, please also try pairing ear tips with different sizes for left and right.

Maintenance

Gently remove any build-up from the mesh filter with the tip of a toothpick. Please take care to ensure that no foreign particles fall inside when doing so.

Points of Caution

• There is a risk of permanent hearing loss from extended use at excessive sound volumes. Please do not exceed 40 hours use per week at a sound volume of 80 dB(A) or 5 hours per week at a volume of 89 dB(A).
• To avoid electromagnetic interference, please refrain from use in places in which the use of electronic devices is prohibited.
• If you are using a pacemaker or other electronic medical devices, please consult your physician before using this product.
• This product contains small parts that may be hazardous to children, so please store in a place that is out of the reach of children.
• Please do not subject to strong shocks or apply excessive force. Damage from abnormal use is not covered by the warranty. To prevent damage, please store the earphones inside the case in an appropriate location.
• Causing damage to the circuits may result in fire or electrical shock, so please do not attempt to disassemble this product.
• Please keep this product away from water or other liquids that may cause shorts or other damage.
• Please do not attempt to repair this product yourself as unauthorized attempts at repair may void the product warranty.
• Never use earphones when operating a bicycle, automobile, motorcycle or another motor vehicle as this is a cause of traffic accidents and there is a risk of serious consequences. Even when not driving, please do not use at railroad crossings, traffic intersections and other environments where there is a danger in the inability to hear surrounding sounds.
• This product may be damaged if it is placed in locations where the environment is subject to excessive direct sunlight, humidity, dust and other contaminants.
• Always keep the charging terminals clean. Dirt and dust adhered to the metal charging points of the earphones or the pins of the charging case might cause short-circuit, burn, or fire.

Troubleshooting: When you think, “Is it broken?”

For safety of transportation from overseas, laws and

 |  | regulations do not allow the internal battery to be fully
 | (Immediately after purchasing)

Battery charge is low

| charged at the time of shipping. For that reason. voltage may fall below the level required for operation at the time the customer opens the package. Fully

charging the battery before use may relieve this

 |  | inconvenience. Please refer to “Power/Charging· on
 |  | P.3 regarding the method for charging.
Earphones will not turn ON|

Earphone batteries are depleted

|

Please return the earphones into the charging case and close the case to charge them. (In case the charge in the charging case has run out, please charge the charging case first.) Please refer to “Power/

 |  | Charging” on P.3 regarding the method for charging.
 |

The touch control panel has not been touched for

|

Please touch and hold the touch control panel until the power supply turns ON. Please refer to “Turning on the earphones· on P. 4 regarding the method for

 | adequate 11me| turning the earphones ON.
 |

An error has occurred

|

In some cases, performing a reset operation may !ix

 | due to improper| the problem. Please refer to “Factory reset method”
 | operation| on P.8 regarding the reset method.
Earphones will|  |
not turn OFF| The touch control| Please touch and hold the touch control panel until
 | panel has not been| the power supply turns OFF. Please refer to·rurning
 | touched for| off the earphones· on P.5 regarding the method for
 | adequate time| turning the earphones OFF.

Troubleshooting: When you think, “Is it broken?”

Earphones will not turn OFF

|

Charging case battery charge is low

| Normally, ii the earphones are returned to an adequately charged case and have the case closed, the earphones will automatically turn OFF. If the earphones do not turn OFF. the banery power level of the charging case might be too low. Please try again after charging the charging case.Please refer to “Pcmer/ Charging· on P.3 regarding the method for charging.

Using ear tips other than those included as accessories

| Normally, if the earphones are returned to an adequately charged case and have the case closed, the earphones will automatically turn OFF. HO’Never, if ear tips other than those included as accessories are used, there are cases in which they may interfere with the charging case and cause the earphones could not be turned OFF. Please

c eck to see whether the earphones turn OFF by using original ear tips

Earphones cannot be charged

| Metal contacts on earphone is not touching the pins

on the charging case

| After ensuring that the insulation plastic strips have been removed, please check that there is adequate contact between the metal contacts and the pins on the charging case.

Charging case battery charge is low

| Normally, if the earphones are returned to an adequately charged case and have the case closed, the earphones will automatically turn OFF and start being charged. II the charging does not start. the battery power level of the charging case might be too low. Please try again after charging the charging case. Please refer to “Power/Charging· on P.3 regarding the method for charging.
The lid of the charging case is not properly closed| Charging will not start if the lid is not properly closed after the earphones are returned to the case. Please check if the lid of the case is properly closed.

Problem

|  | Cause| Remedy
---|---|---|---

Earphones cannot be charged

|

Using ear tips other than an accessory

|

Normally, if the earphones are returned to an adequately charged case and have the case closed, the earphones will automatically turn OFF and start being charged. However, ii ear tips other than those included as accessories are used, there are cases in which they may interfere with the charging case and cause the earphones could not be turned OFF. Please check to see whether the earphones turn OFF by using original ear tips.

Touch sensor is

not functioning

|

The touch control panel section has become soiled or wet

|

In case the touch control panel section has become soiled or wet, the touch control panel may not funtion properly, and it may not be possible to operate the earphones. Please wipe the touch control panel section with a soft, dry cloth to remove stains or moisture.

While playing music, sound (connection) is interrupted

|

Unstable connection caused by interference from external factor

|

Bluetooth communicates using the 2.4GHz band. This band is used by other wireless standards such as Wi•Fi. etc., and so there is a possibility ol receiving interference. Moreover. this 2.4GHz band does not penetrate liquids. There is impact from humidity and rain, and the human body also contains liquid, so there are individual differences in connectivity.

Furthermore, it depends on the specifications of smartphones and other devices.

For that reason, switching OFF unused Wi-Ft /

Bluetooth semngs on surrounding devices, etc. is a countermeasure. While outside, there is a possibility that moving a smartphone from inside a bag to a breasl pocket, etc. or otherwise reducing the distance between devices may improve the connection status.

Warranty and after service

The warranty for this product is valid for 1 year from the date of purchase. During the warranty period, we will repair the product based on the provisions below. The warranty is only which the product was purchased. Please contact the store you purchased the product from
regarding questions pertaining to repairs.

1. During the warranty period, we will prepare ir the product free of charge ii the product failed even though it was used in accordance with the instructions in the user ‘s manual and the point of caution sections.

2. In the following cases, repairs to the product will be subject to a fee even during the warranty period:

3. The necessary documentation noted in the warranty card is not complete.

4. The product is identified to be modified, disassembled, or repaired by a third party or customer other than our company or our authorized organizations.

5. The earphones were subjected to a strong impact or were allowed to get wet. Product failure resulting from an excessive use of force on the product.

6. Failure of the product or damage caused as a result of fire, earthquake, storm or flood damage, i
   lightning str ke or other natural disasters.

7. Repair of scratches on the surface of the housing or repair of the housing itself.

Guidance for Purchase Made from Amazon :
For purchases made from Amazon, kindly refer to the guides below should you need any support or after-sales service.

1. If you cannot find an answer to your questions in this user manual or the Q&A section on the Amazon product page, kindly post your question under the ‘Have a question?” section of the Amazon product page, and you will receive a response from us.
2. If the product is not functioning wel1, kindly perform the troubleshooting remedies or a factory reset by following the guides stated in the user manual.
3. If the problem remains unresolved after performing a factory reset and your product is within 30 days from the date of purchase, please make a product return request through Amazon ‘Returns & Orders’ after logging in to your account.
4. If the problem remains unresolved after performing a factory reset and your product has exceeded 30 days from the date of purchase, kindly contact us through Amazon by clicking “Sold by: AG Direct’ on the product page. Then, please send your inquiry after clicking ‘Ask a question’.
5. If you are happy with the product, kindly leave a genuine review on Amazon, and your experience and excitement would reach millions of people worldwide.

Manufacturer:

There s a possibility of a change in the spec ification, so please scan this QR code for the latest user’s manual.

Warranty Card

This card is necessary in the event that the warranty is utilized. Please store this card along with a receipt or oth8f documentation showing the date of purchase in a safe place to be produced in the event that the warranty is utilized. Please refer to the manual for the provisions of the warranty.

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