K23 Bluetooth Headset User Manual

Product Overview

The K23 is a stereo Bluetooth headset designed for wireless audio and calls. It supports both left and right ear wearing and offers long battery life.

Pairing Steps

Connect to Mobile Bluetooth Device

1. Long press the multifunction key for 5 seconds to power on and automatically enter pairing state (red and blue indicator lights flash rapidly).
2. Turn on Bluetooth on your mobile device, search for Bluetooth devices, find "K23", and click to connect.

Connect to Computer Device

1. Download and install a universal Bluetooth driver.
2. After installation, a gray Bluetooth icon will appear in the lower right corner of your computer.
3. Insert the Bluetooth adapter (if your computer does not have built-in Bluetooth; adapter sold separately). The gray icon will turn blue.
4. Right-click the blue Bluetooth icon and select "Display the classic page".
5. With the headset off, long press the multifunction key (approx. 4 seconds) until the red and blue indicator lights flash rapidly, indicating pairing mode.
6. Right-click the interface, select "Search devices". Right-click "Obtain device name", click "Search service", then click "Connect Bluetooth headset". Enter the initial password: "0000" to complete the connection.

Charging Method

Three charging methods are available:

• USB interface charging
• On-board charger charging
• Charging plug charging

Use a charger with 1A or less for charging. Disconnect the power supply after fully charged. Charging with a power bank is not recommended.

Frequently Asked Questions (FAQ)

What functions does the headset have?

The headset offers long endurance, left/right ear wearing, track switching, volume adjustment, call handling (answer/hang up/reject), incoming call number announcement, and Chinese/English language switching.

What is the effective signal distance?

The effective Bluetooth signal distance is 8-16 meters. For optimal use, maintain a distance of 5-10 meters. Longer distances can lead to signal weakening, loss, or interference, causing intermittent sound or disconnection. The headset will attempt to reconnect when back within the effective range.

Why is the headset noisy?

Noise or static can be caused by radio signal interference between the phone and headset. To improve call quality:

• Keep the headset and phone on the same side of your body.
• Avoid placing the phone in a bag, as bags (especially leather or briefcase types) can obstruct the signal more than canvas bags.

Precautions

• Store the headset properly when not in use to protect it from damage and loss.
• Do not expose the headset to high temperatures or prolonged direct sunlight.
• If not using the headset for an extended period, charge it fully and then recharge it every two weeks to maintain battery health.
• Do not disassemble the product or use incompatible chargers to avoid damage or safety hazards.
• Keep the headset away from children and individuals with intellectual disabilities to prevent accidental injury.

FCC Statement

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

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.

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.

Package Contents

• Bluetooth Headset
• Ear Hook
• Charging Cable
• Ear Caps
• User Manual