CoolJumper YYK-Q28 Open Ear Bluetooth Headphones User Manual

1. Introduction

Thank you for choosing the CoolJumper YYK-Q28 Open Ear Bluetooth Headphones. These headphones are designed to provide a comfortable listening experience while maintaining awareness of your surroundings, making them ideal for sports and daily use. This manual will guide you through the setup, operation, and maintenance of your new headphones.

2. What's in the Box

This image displays the CoolJumper YYK-Q28 headphones, charging case, USB-C charging cable, and user manual, all neatly arranged within the product packaging.

• 2 x CoolJumper YYK-Q28 Open Ear Headphones (Left and Right)
• 1 x Charging Case
• 1 x USB-C Charging Cable
• 1 x User Manual
• 1 x Packaging Box

3. Product Overview

3.1. Open-Ear Design and Bone Conduction Technology

The image shows a woman wearing the CoolJumper YYK-Q28 headphones, highlighting their ergonomic open-ear design which allows for situational awareness during activities like exercise.

The YYK-Q28 headphones feature an open-ear design that rests outside the ear canal. This design ensures comfort during prolonged use and allows you to hear ambient sounds, enhancing safety during outdoor activities. Utilizing advanced bone conduction technology, these headphones deliver audio through vibrations, providing a rich listening experience without blocking your ears.

3.2. High-Fidelity Sound

This diagram illustrates the internal structure of the 14.2mm dynamic speaker, emphasizing its role in producing Hi-Fi sound with enhanced bass, mids, and highs.

Equipped with a 14.2 mm dynamic speaker and advanced sound-enhancing technology, the YYK-Q28 delivers immersive Hi-Fi audio with dynamically resonant bass, clear mids, and crisp highs.

3.3. Bluetooth 5.4 Connectivity

The image displays a detailed graphic of a Bluetooth 5.4 chip, illustrating its benefits such as 100% increased transmission speed, 75% more stable connection, and 50% extended connection range compared to previous versions.

Featuring advanced Bluetooth 5.4 technology, these headphones offer faster pairing, stronger connectivity, and more efficient performance with ultra-low latency. They are compatible with almost all Bluetooth-enabled devices.

3.4. Physical Components

This image provides a detailed view of the CoolJumper YYK-Q28 open-ear headphones, showcasing their sleek design and earhook structure.

• Earbuds: Each earbud features a flexible earhook for a secure fit and a touch control area. They weigh only 0.26oz (approx. 7.4g) each.
• Charging Case: A compact case that charges and stores the earbuds, featuring an LED display for battery status.

4. Setup

4.1. Charging the Headphones

The image illustrates the charging process and battery indicators of the CoolJumper YYK-Q28. It highlights 8 hours of playtime per charge, 32 hours from the case, and 1.5 hours for full Type-C charging.

1. Place the earbuds into the charging case, ensuring they are correctly seated.
2. Connect the USB-C charging cable to the charging port on the case and plug the other end into a USB power adapter (not included) or a computer's USB port.
3. The LED display on the charging case will show the battery percentage of the case and individual earbuds.
4. A full charge for the case takes approximately 1.5 hours. The earbuds charge automatically when placed in the case.

Note: Fully charge the headphones before first use for optimal battery performance.

4.2. Wearing the Headphones

This diagram illustrates the correct method for wearing the open-ear headphones: 1) Hang the end of the earbud on the earbone, 2) Rotate and slide the earbud behind the ear, and 3) Adjust to a suitable position.

1. Hang the end of the earbud over your earbone.
2. Rotate the earbud and slide it behind your ear.
3. Adjust the earbud to a comfortable and secure position.

4.3. Pairing with a Bluetooth Device

The image shows a user successfully connecting the CoolJumper YYK-Q28 headphones to a smartphone via Bluetooth, demonstrating the automatic connection feature after initial pairing.

1. Open the charging case. The earbuds will automatically power on and enter pairing mode.
2. Enable Bluetooth on your device (smartphone, tablet, computer).
3. Search for "YYK-Q28" in the list of available Bluetooth devices and select it to connect.
4. Once connected, you will hear a confirmation tone, and the earbuds will be ready for use.

Note: After the first successful pairing, the earbuds will automatically connect to the last paired device when taken out of the charging case, provided Bluetooth is enabled on the device.

5. Operating Instructions

5.1. Touch Controls

This image details the smart touch controls for the CoolJumper YYK-Q28 headphones, showing gestures for play/pause, switching songs, adjusting volume, answering/hanging up calls, rejecting calls, and activating the voice assistant.

6. Maintenance

6.1. Cleaning

• Wipe the earbuds and charging case with a soft, dry, lint-free cloth.
• Do not use abrasive cleaners, solvents, or aerosol sprays.
• Ensure charging contacts are clean and dry to prevent charging issues.

6.2. Storage

• Store the headphones in their charging case when not in use to protect them and keep them charged.
• Avoid storing in extreme temperatures or high humidity.

6.3. Water Resistance (IPX7)

The image shows the CoolJumper YYK-Q28 headphones and their charging case in water, indicating their IPX7 waterproof and sweatproof capabilities, suitable for rain and intense workouts.

The YYK-Q28 headphones are rated IPX7 waterproof, meaning they can withstand immersion in water up to 1 meter for 30 minutes. They are resistant to rain and sweat, making them suitable for workouts and outdoor activities.

• Do not intentionally submerge the charging case. While the earbuds are IPX7, the case is not designed for immersion.
• Ensure the earbuds are dry before placing them back into the charging case to prevent damage to the charging contacts.
• Water resistance is not a permanent condition and may decrease as a result of normal wear.

7. Troubleshooting

8. Specifications

9. Warranty and Support

CoolJumper products are designed for reliability and performance. For warranty information, technical support, or customer service inquiries, please refer to the contact information provided on the product packaging or visit the official CoolJumper website.

You can also visit the CoolJumper Store on Amazon for more product information and support resources.