MSI CH40 Wireless Earbuds User Manual

Introduction

Thank you for choosing MSI CH40 wireless earbuds. This guide provides instructions and illustrations to help you get the most from the product. It is recommended to read this guide before using it.

Overview

The MSI CH40 wireless earbuds feature:

• 1. Touch Sensor
• 2. Earbud's Indicator
• 3. Microphone
• 4. Charging Case
• 5. Case's Indicator
• 6. USB Type-C Charging Port

Turn On and Turn Off

To turn on or off the earbuds, simply take them out from or put them back into the charging case. Alternatively, place your finger on the Touch Sensor for 5 seconds to turn the earbuds ON or OFF when not using the charging case.

Pairing

1. Take both earbuds out from the charging case.
2. The Right earbud indicator will flash red and blue, and the Left earbud indicator will flash blue once every 5 seconds, indicating they are ready to use.
3. Place both earbuds on your ears and follow the voice prompt instructions.
4. Activate the Bluetooth function on your device and search for "MSI CH40". Select "MSI CH40" to connect.
5. Once connected, both earbud indicators will flash blue once every 5 seconds.

Note: If the connection does not work properly, refer to the "Troubleshooting" section.

Music Playback

The Touch Sensor on each earbud performs the same functions:

• Play: Touch the Touch Sensor once.
• Pause: Touch the Touch Sensor once while playing.
• Voice Assistant: Double-touch the Touch Sensor.
• Next Track: Triple-touch the Touch Sensor while playing.
• Previous Track: Quadruple-touch the Touch Sensor while playing.

Phone Calls

• Answer Call: Touch the Touch Sensor once to answer an incoming call.
• Hang Up: Touch the Touch Sensor once to end an ongoing call.
• Refuse Call: Long-touch the Touch Sensor for at least one second to refuse an incoming call.

Charging

It is recommended to fully charge the earbuds before first use.

Earbuds Charging

• Place the earbuds within the charging case to recharge them automatically. The earbuds will show a red light.
• While charging, both earbud indicators will continuously flash red.
• Once fully charged, the earbud indicators will flash blue for 10 seconds and then turn off. The charging case indicator will also turn off after 10 seconds.
• During a call, both earbud indicators will flash red once every 5 seconds.

Note: If the charging case is not working properly, connect an external power supply to it using a USB cable. Charge the earbuds when you hear a voice prompt indicating "Low Battery".

Charging Case Charging

• The indicator flashes blue when the battery is low.
• When charging with a USB cable, the indicator flashes red. The indicator glows red when the charging case is fully charged.

Note: If the earbuds and charging case are left unused for more than 2 weeks, please fully charge them before use.

Troubleshooting

Reset the earbuds if you encounter the following issues:

Connection Failure Between Earbuds and Devices

1. Place both earbuds back into the charging case.
2. Long-touch the touch sensors of both earbuds for more than 8 seconds to reset them.
3. Delete the existing pairing connection from your device.
4. Repeat the pairing instructions to reconnect the earbuds to your device.

No Sound Response from One Earbud

1. Place both earbuds on your ears and ensure they are turned ON.
2. Place your fingers on the Touch Sensors of both earbuds for 3 seconds. Remove your fingers once you hear a beep.
3. Place both earbuds back into the charging case.
4. Take both earbuds out of the charging case and place them on your ears.
5. Turn on the earbuds and check the sound response from both.
6. If there is still no sound response from one or both earbuds, reset them and then reconnect to the device.

Indicators Check Table

FCC Compliance Statement

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.

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.

Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the device. Where shielded interface cables have been provided with the product or specified additional components or accessories elsewhere defined to be used with the installation of the product, they must be used in order to ensure compliance with FCC regulations.

RF warning for Portable device: The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction.

ISED Compliance Statement

This device contains licence-exempt transmitter(s)/receiver(s) that comply with Innovation, Science and Economic Development Canada's licence-exempt RSS(s). Operation is subject to the following two conditions: (1) This device may not cause interference. (2) This device must accept any interference, including interference that may cause undesired operation of the device.

L'émetteur/récepteur exempt de licence contenu dans le présent appareil est conforme aux CNR d'Innovation, Sciences et Développement économique Canada applicables aux appareils radio exempts de licence. L'exploitation est autorisée aux deux conditions suivantes : (1) L'appareil ne doit pas produire de brouillage; (2) L'appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d'en compromettre le fonctionnement.

Low Power Radio Frequency Device Warning: Devices that have been formally certified as low power radio frequency devices must not, without permission, alter frequency, increase power, or change the original design characteristics and functions. The use of low power radio frequency devices must not affect flight safety and interfere with legal communications. If interference is found, it should be stopped immediately and improved until there is no interference before continuing use. Legal communications refer to radio communications operated according to the Telecommunications Act. Low power radio frequency devices must tolerate interference from legal communications or industrial, scientific, and medical radio frequency radiating devices.