1. Product Overview
The Monster XKT21 Sports Earphones are designed for an immersive audio experience, featuring Bluetooth 5.3 connectivity, Hifi stereo sound, and clear HD calls. Their unique clip-on design ensures a secure and comfortable fit, ideal for sports and daily use. The earbuds come with a portable charging case and a convenient lanyard for easy carrying.
Package Contents
- Monster XKT21 Earbuds
- Charging Case
- USB Type-C Charging Cable
- User Manual
- Lanyard
2. Setup Guide
Initial Charging
- Place both earbuds into the charging case.
- Connect the USB Type-C charging cable to the charging port on the case and a power source.
- The indicator light on the charging case will show charging status. Ensure the earbuds and case are fully charged before first use for optimal battery life.
Pairing with a Device
- Open the charging case and take out both earbuds. They will automatically enter pairing mode.
- On your device (smartphone, tablet, laptop), enable Bluetooth.
- Search for "Monster XKT21" in the list of available Bluetooth devices.
- Select "Monster XKT21" to connect. Once connected, you will hear a confirmation tone.
3. Operating Instructions
Wearing the Earbuds
The Monster XKT21 features an ear-clip design for a comfortable and secure fit. Gently clip the earbuds onto your ears, ensuring the speaker is positioned correctly for optimal sound.
Basic Functions (Touch Controls)
The earbuds are equipped with touch-sensitive controls for various functions. Specific touch gestures may vary slightly, but common functions include:
- Play/Pause: Single tap on either earbud.
- Next Track: Double tap on the right earbud.
- Previous Track: Double tap on the left earbud.
- Answer/End Call: Single tap on either earbud during an incoming call.
- Reject Call: Press and hold either earbud for 2 seconds during an incoming call.
- Activate Voice Assistant: Triple tap on either earbud.
- Volume Control: Adjust directly from your connected device.
Single and Dual Earbud Use
The Monster XKT21 supports seamless switching between single and dual earbud modes. You can use either earbud independently or both together for a stereo experience.
Gaming Mode
Experience synchronized game sound and visuals with the dedicated gaming features, enhanced by smart algorithms for a smooth and enjoyable gaming experience.
HD Call Functionality
The earbuds feature high-definition voice capabilities and ENC Smart Noise Insulation, allowing for clear communication even in noisy environments.
Product Showcase Video
4. Maintenance
Cleaning
- Wipe the earbuds and charging case with a soft, dry, lint-free cloth.
- Do not use harsh chemicals, cleaning solvents, or strong detergents.
- Ensure charging contacts are clean and dry before charging.
Storage
- Store the earbuds in their charging case when not in use to protect them and keep them charged.
- Avoid storing in extreme temperatures, high humidity, or dusty environments.
Water Resistance
The Monster XKT21 earbuds are waterproof. However, they are not designed for swimming or prolonged submersion. Avoid exposing them to saltwater, chlorinated water, or other liquids that may cause damage. Dry thoroughly if they get wet.
5. Troubleshooting
Earbuds Not Pairing/Connecting
- Ensure both earbuds are charged and taken out of the case.
- Turn off and on your device's Bluetooth, then try pairing again.
- Forget/delete "Monster XKT21" from your device's Bluetooth list and re-pair.
- Try resetting the earbuds (refer to the full manual if a specific reset procedure is available, otherwise, place them back in the case, close, wait 10 seconds, then reopen).
No Sound or Low Volume
- Check the volume level on both your device and the earbuds.
- Ensure the earbuds are properly seated in your ears.
- Confirm the earbuds are connected to the correct device.
- Clean any debris from the earbud speakers.
Charging Issues
- Ensure the charging cable is securely connected to both the case and the power source.
- Verify the charging contacts on the earbuds and inside the case are clean and free of obstruction.
- Try a different USB Type-C cable or power adapter.
6. Specifications
| Feature | Specification |
|---|---|
| Product Type | Bluetooth headphones with ear clips |
| Bluetooth Version | 5.3 |
| Transmission Distance | ≥10 meters |
| Horn Type | 10mm Moving Coil Speaker |
| Frequency Range | 20 - 20000 Hz |
| Sensitivity | 108 ± 3dB |
| Impedance Range | up to 32 Ω |
| Charging Interface | Type-C |
| Headphone Battery Capacity | 3.7V / 40 mAh |
| Charging Time | Approx. 1.5 hours |
| Headphone Playback Time | Approx. 4-5 hours |
| Total Endurance Time (with case) | Approx. 22 hours |
| Material | Metal, ABS |
| Features | Waterproof, With microphone, Active Noise-Cancellation |
| Codecs | AAC |
| Certification | CE |
7. User Tips
- Comfortable Fit: The ear-clip design is intended for a painless and stable fit, especially during movement. Experiment with the positioning to find the most comfortable and secure placement for your ears.
- Seamless Switching: Take advantage of the seamless single/dual earbud switching for flexibility in different scenarios, whether you need to be aware of your surroundings or want full stereo immersion.
- Enhanced Gaming: For gamers, the synchronized sound and picture, along with smart algorithms, are designed to provide a more enjoyable and smooth gaming audio experience.
- Portability: Utilize the included lanyard and the compact charging case for easy and secure carrying, ensuring your earbuds are always with you and protected.
- Stable Connection: The Bluetooth 5.3 chip ensures a fast, accurate, and stable connection. If you experience any drops, ensure your device is within the 10-meter transmission range and there are no major obstructions.
8. Warranty and Support
For warranty information, technical support, or service inquiries, please refer to the warranty card included in your product packaging or contact the retailer/manufacturer directly. Keep your proof of purchase for any warranty claims.
