CoolJumper YYK-Q28 Open Ear Bluetooth Headphones User Manual

1. Introduction

Thank you for choosing CoolJumper YYK-Q28 Open Ear Bluetooth Headphones. These headphones are designed to provide a comfortable and immersive audio experience while keeping you aware of your surroundings. Featuring advanced Bluetooth 5.4 connectivity, long battery life, and IPX7 waterproofing, they are ideal for various activities, including workouts and daily commutes.

Image: The CoolJumper YYK-Q28 Open Ear Bluetooth Headphones, showcasing their unique open-ear design and sleek white finish.

2. What's in the Box

Please check the package contents to ensure all items are present:

• 2 * Bluetooth 5.4 Open Ear Headphones (Left and Right)
• 1 * Charging Case
• 1 * User Manual
• 1 * USB-C Cable
• 1 * Packaging Box

Image: A visual representation of the CoolJumper YYK-Q28 product packaging, displaying the headphones, charging case, USB-C cable, and user manual.

3. Product Features

3.1. Open Over-Ear Design

The YYK-Q28 headphones feature a revolutionary ergonomic open-ear design. This allows you to enjoy audio while maintaining awareness of your surroundings, enhancing safety during outdoor activities. The design avoids insertion into the ear canal, preventing discomfort from prolonged wear.

Image: A close-up showing the flexible, comfortable, and lightweight aspects of the ergonomic open-ear design, highlighting how the headphones sit securely without entering the ear canal.

3.2. Advanced Bluetooth 5.4 Connectivity

Equipped with cutting-edge Bluetooth 5.4 technology, these earbuds offer quicker pairing, more stable connections, and higher efficiency. Experience clear audio with minimal latency, ideal for music, calls, and video content. This technology ensures reliable performance and reduces connection drops.

Image: A diagram illustrating the advanced Bluetooth 5.4 chip, emphasizing improved transmission speed, stable connection, and extended connection range.

3.3. Extended Playtime with LED Indicator

Enjoy up to 8 hours of playback on a single charge. The sleek magnetic charging case provides an additional 32 hours, totaling 40 hours of use. The case fully recharges in approximately 1.5 hours via Type-C. A built-in LED digital display on the charging case clearly shows the battery status of both the case and individual earbuds.

Image: The charging case with the headphones inside, displaying the LED screen showing battery percentages for the case and individual earbuds, along with icons indicating 8 hours playtime, 32 hours additional battery life, and 1.5 hours Type-C charging time.

3.4. Hi-Fi Sound with Enhanced Bass

Designed with advanced sound-enhancing technology and a unique acoustic structure, these headphones deliver immersive Hi-Fi audio that remains clear and natural. The 14.2mm dynamic speaker provides dynamically resonant bass, offering a rich listening experience without blocking your ears.

Image: An exploded view of the headphone's internal speaker components, illustrating the 14.2mm dynamic speaker and highlighting the enhanced bass, mids, and highs.

3.5. IPX7 Waterproof and Sweatproof

The headphones are rated IPX7 waterproof, making them resistant to rain, sweat, and splashes. This protection ensures durability and reliable performance during intense workouts or in various weather conditions.

Image: The headphones and charging case being splashed with water, visually representing their IPX7 waterproof and sweatproof capabilities.

4. Setup

4.1. Charging the Headphones and Case

Before first use, fully charge the headphones and the charging case. Connect the provided USB-C cable to the charging port on the case and a compatible USB power source. The LED display on the case will indicate the charging status. A full charge takes approximately 1.5 hours.

4.2. Initial Pairing

The YYK-Q28 headphones feature automatic one-step pairing. Simply take the headphones out of the charging case, and they will automatically enter pairing mode. Then, follow these steps:

1. Ensure Bluetooth is enabled on your device (smartphone, tablet, etc.).
2. Open your device's Bluetooth settings.
3. Look for "YYK-Q28" in the list of available devices and select it to connect.
4. Once connected, you will hear an audible confirmation, and the headphones will be ready for use.

After the initial pairing, the headphones will automatically connect to the last paired device when removed from the charging case, provided Bluetooth is enabled on the device.

Image: A visual guide demonstrating the automatic one-step pairing process, showing the headphones and charging case next to a smartphone with the Bluetooth settings open, displaying "YYK-Q28" as a connected device.

5. Operating Instructions

5.1. Wearing the Headphones

To ensure optimal comfort and sound quality, follow these steps to properly wear your YYK-Q28 headphones:

1. Step 1: Hang the end of the earbud on the earbone.
2. Step 2: Rotate the earbud and slide it behind the ear.
3. Step 3: Adjust the earbud to a suitable position for a secure and comfortable fit.

Image: A three-step diagram illustrating how to correctly position the open-ear headphones on the ear for a secure and comfortable fit.

5.2. Smart Touch Controls

The YYK-Q28 headphones feature intuitive smart touch controls on each earbud. A light tap handles various operations:

Image: A visual guide detailing the various smart touch control gestures for play/pause, song switching, volume adjustment, call management, and voice assistant activation.

6. Maintenance

To ensure the longevity and optimal performance of your CoolJumper YYK-Q28 headphones, please follow these maintenance guidelines:

• Cleaning: Use a soft, dry, lint-free cloth to clean the headphones and charging case. Do not use abrasive cleaners, alcohol, or chemical sprays.
• Water Exposure: While the headphones are IPX7 waterproof, avoid prolonged submersion in water. After exposure to sweat or rain, wipe them dry thoroughly before placing them back in the charging case to prevent corrosion.
• Storage: Store the headphones and charging case in a cool, dry place away from extreme temperatures and direct sunlight.
• Charging: Always use the provided USB-C cable and a certified power adapter for charging to prevent damage to the battery.

7. Troubleshooting

If you encounter issues with your headphones, please refer to the following common solutions:

8. Specifications

9. Warranty and Support

CoolJumper products are manufactured with high quality standards. For any product-related inquiries, technical support, or warranty claims, please contact the seller or CoolJumper customer service through the platform where you purchased the product. Please retain your proof of purchase for warranty purposes.

For more information, you may visit the CoolJumper Store on Amazon.