Bumengshanghaimaoyiyouxiangongsi K8 Bone Conduction Headphones

Product Overview

Diagram showing the K8 Bone Conduction Headphone with numbered components: 1. Magnetic Charging and Date Sync Port, 2. Next song/Volume Up (Long Press), 3. Power ON/OFF and MODE Switch Button, 4. Previous Song/Volume Down (Long Press), 5. Microphone, 6. LED Indicator, 7. PLAY/PAUSE/ANSWER/HANG-UP (MFB Button).

Basic Operations

Power ON/OFF and Mode Switch

Press and hold the button (3) for 3 seconds to Power ON or Power OFF. The device automatically enters MP3 mode after powering on. Click the button once for Mode switch. Double-click quickly after Power ON to change the voice prompt language.

Bluetooth (BT) Mode

When music is playing, press the power button (3) once to switch to BT mode. You will hear a tone, and the LED will flash blue and red lights, indicating it's ready to connect. Connect with your phone via Bluetooth using the K8 device name. The device will automatically POWER OFF after 5 minutes of inactivity.

Answering/Rejecting Calls

Click the MFB button (7) once to answer incoming calls when connected via Bluetooth. Click again to hang up. Quickly click twice to reject an incoming call.

MP3 Mode

Press and hold the power button (3) for 3 seconds. The Blue LED light will flash, and the device will enter playback mode. Connect the USB Charging/Transfer cable to your computer's USB port. Your computer will automatically recognize the K8 as a flash disk. You can add, copy, and delete songs like a USB flash drive. Note: Power ON the device first for data sync before connecting to a PC.

Volume and Song Control

Long press (2 seconds) the +/- buttons (2, 4) to increase or decrease volume. Single press the +/- buttons to skip to the next or previous song.

Pause/Play

While music is playing, click the Play Key (7) to pause, and click again to resume playback. The playlists are arranged in the order files are copied to the K8 disk. Long pressing the Play Key will activate your phone's intelligent voice assistant.

Charging and Data Transfer

Charging

Use the original charging cable (included) to charge the headphone. A solid Red LED indicates charging. The Red LED turns Blue when charging is complete. The charger voltage rating should not exceed 5V.

OTG Download

Download music songs using your own OTG adapter cable. Connect the headphones with the original data cable and turn on the headphone. Copy songs to the device as you would with a flash disk after it is recognized. Note: OTG function requires your phone to support it.

Maintenance and Troubleshooting

Wearing Tips

• Charging time should not exceed 2 hours. Charge at least once a month. Keep the device dry.
• Use only the original cable for charging and data sync to prevent damage.
• Safely eject the device after completing data downloads.

Issue Solve

• Automatic Disconnection: The headphone may disconnect if the protective mechanism is activated due to temperature. It will reconnect later for data sync.
• Unresponsive Device: If the device is unresponsive and won't switch on/off, press and hold the power button (3) for 10 seconds to reset.
• Connection Issues: If the LED does not light up or the device is not recognized after connecting to a computer, check if the USB cable is correct and fully inserted. Do not use extension cords; plug directly into the computer's USB port or a charger.

Specifications

Package Contents

• 1 x BT Bone Conduction Headphone
• 1 x USB charging/transfer Cable
• 1 x User Guide
• 1 x Silicone Adjustable Headband

FCC Compliance Information

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.

Any 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.