M-F8 Bluetooth Earphones User Manual

Introduction

Thank you for purchasing and using our Bluetooth earphones. This manual helps you understand how to use this Bluetooth headset. Before using the Bluetooth headset, you should understand your mobile phone or other device's Bluetooth function.

Design Note: More suitable for the right ear to wear. Middle earplugs are suitable for 90% of people; we recommend trying the middle earplugs first.

Getting Started

Start to Use

Press and hold the multi-function button on the center surface of the Bluetooth headset for up to 8 seconds until the indicator light flashes blue and red alternately. Note: The blue light indicates the model is not discoverable. You must long-press for 8 seconds while the device is off until the indicator light flashes blue and red alternately before releasing. Then, search and pair with your mobile phone. After successful pairing, press the power button for 2-3 seconds to turn on and automatically link.

How to Pair

Visual Description: A smartphone screen showing Bluetooth settings. The status indicates Bluetooth is ON and discoverable. Under "Available Devices", "M-F8" is listed.

Steps:

1. Turn on your phone's Bluetooth.
2. Search for "M-F8" and tap to connect.

Visual Description: The phone screen shows "M-F8" as a connected device.

Text on Screen: "M-F8", "BLUETOOTH V5.0"

Earphone Charging

When the battery is low, the earphone will flash a red light and provide a voice reminder. Use the charging cable to connect to a USB interface to charge the earphones.

Charging Status: A solid red light indicates charging. A solid blue light indicates a full charge.

Precautions for Charging:

• Use a DC 5V charger, such as a computer's USB port or a mobile phone charger's USB port. (Must choose a certified charger from a reputable manufacturer).
• The red light is on during the charging process.
• Repeated charging and discharging will reduce battery performance; this is normal for rechargeable batteries.

Function and Operation

Power On/Off Operation Steps

1. Pairing: In shutdown state, long press the power button for 6 seconds ([Blue/red flashing]).
2. Power On: In shutdown state, long press the power button for about 3 seconds ([Blue light flashing]).
3. Power Off: In the powered-on state, long press the power button for 4 seconds ([Red light flashing]).

Chinese/English Speech Prompt Switch

In the powered-on state, double-click the function key for about 1 second to switch between Chinese and English voice prompts.

Operation Method

• Answer Phone Call: When there is an incoming call ([Blue light flashing]), click the power button once to answer. ? [Answer Call]
• End Phone Call: During a call, click the power button once to end the call.
• Play Music: ▷ [Play] In standby mode, click the power button once.
• Pause Music: ⏸️ [Pause] While music is playing, click the power button once to pause playback.

Product Parameters

Safety Criteria

⚠️ Warnings:

1. Do not disassemble or modify the device for any reason, as this may cause the earphone to malfunction or burn out.
2. Do not allow the device to come into contact with liquids, as this will cause serious damage to the device.
3. Do not place the device in environments with temperatures that are too low or too high (below 0℃ or above 45℃).
4. Do not use the device during thunderstorms. Thunderstorms can cause the device to malfunction or signal interruption.
5. Do not charge with a mobile power bank, as this may cause the earphone to malfunction or burn out.
6. Do not charge with a charger rated above 1A, as this may cause the earphone to malfunction or burn out.

Note: Damage caused by the above 6 points is not covered by the warranty.

After-Sale Support and Warranty Information

If the product you purchased has a non-human-induced failure, please contact the dealer for warranty service.

Warranty Information

Warranty Period: The quality warranty period for this product is 12 months from the date of purchase.

Free Service:

For product quality issues, please present this warranty card and proof of purchase to the dealer for free repair services. The following situations are not covered by free repair:

• No warranty card or the product's maintenance label has been damaged.
• Damage caused by self-disassembly.
• Damage caused by water ingress or dropping.
• Malfunctions and damage caused by force majeure.

Customer Warranty Data

Music Should Young

Bind your phone number, expert team online to answer questions, Bluetooth earphone usage video tutorials, and professional product knowledge.

FCC 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.

Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.

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.

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