1. Product Overview
The KT1 Q25 Bluetooth Headphones are wireless earbuds designed for active lifestyles, featuring a secure earhook design, extended battery life, and robust waterproof capabilities. This manual provides detailed instructions for optimal use and care of your device.

Figure 1.1: KT1 Q25 Wireless Earbuds and Charging Case. The image displays the two black earbuds with earhooks and the sleek black charging case with a digital display.
Key Features:
- 120H Playtime: Enjoy up to 7 hours of use on a single charge, extended to 120 hours with the portable charging case. The LED digital display on the case shows battery status.
- Bluetooth 5.3: Advanced Bluetooth 5.3 technology ensures stable connection, enhanced signal, and low latency (42ms). Supports both binaural stereo and mono modes.
- Hi-Fi Sound Quality & HD Voice: Equipped with 10mm graphene dynamic speaker units and enhanced bass 3.0 technology for rich audio. Built-in microphones provide clear call performance with noise isolation.
- Sports Earhook Design: Soft rubber earhooks provide a secure and comfortable fit, suitable for various ear types and extended wear during physical activity.
- IPX7 Waterproof: Nano-coating technology protects the earbuds from sweat and rain, making them ideal for sports and daily use.

Figure 1.2: Long Battery Life. This image illustrates the impressive battery life of the KT1 Q25 earbuds, showing 7 hours on a single charge and 120 hours with the charging case, along with Type-C fast charging capability.

Figure 1.3: Enhanced Bass. A diagram showing the internal components of the earbud, highlighting the 10mm titanium-coated diaphragm and indicating 43% more bass, powered by Bluetooth 5.3.

Figure 1.4: IPX7 Waterproof. A man is shown pouring water over his head while wearing the earbuds, illustrating their IPX7 waterproof rating, designed to resist sweat and rain during exercise.
2. Setup Guide
2.1 Package Contents
Before beginning, ensure all items are present in the package:
- KT1 Q25 Wireless Earbuds (Left and Right)
- Charging Case
- USB Charging Cable (Type-C)
- Ear Tips (S, M, L sizes)
- User Manual (CD format, or digital access)

Figure 2.1: Product Packaging. The front of the KT1 Q25 product box, displaying the model number and a line drawing of the earbuds and case.
2.2 Initial Charging
- Place both earbuds into the charging case. Ensure they are properly seated.
- Connect the USB Type-C charging cable to the charging port on the case and the other end to a USB power source (e.g., wall adapter, computer USB port).
- The LED digital display on the charging case will show the battery percentage. Allow the case and earbuds to fully charge before first use. A full charge typically takes 1.5 hours.

Figure 2.2: LED Power Display. The charging case is open, showing the earbuds inside and the digital display indicating the case's power level (99%) and that the earbuds are charging (R and L indicators).
2.3 Bluetooth Pairing
- Ensure the earbuds are charged.
- Open the charging case. The earbuds will automatically enter pairing mode.
- On your device (smartphone, tablet, laptop), enable Bluetooth.
- Search for available Bluetooth devices. Select "Q25" from the list.
- Once connected, a voice prompt will confirm successful pairing. The earbuds will automatically reconnect to the last paired device when removed from the case.

Figure 2.3: Bluetooth Connection. An illustration showing the KT1 Q25 earbuds wirelessly connecting to a smartphone, with the phone screen displaying a successful Bluetooth connection to "Q25".
3. Operating Instructions
3.1 Wearing the Earbuds
Select the ear tips that provide the best seal and comfort. Gently insert the earbud into your ear canal and adjust the earhook over your ear for a secure fit. The flexible earhooks are designed to keep the earbuds stable during movement.

Figure 3.1: Comfortable Fit. This image demonstrates the ergonomic design of the earbuds, highlighting the comfortable fit, flexible ear hooks, and the availability of S, M, and L ear tip sizes for optimal comfort.
3.2 Smart Touch Controls
The KT1 Q25 earbuds feature touch-sensitive controls on each earbud for easy management of music playback, calls, and voice assistant activation.
| Action | Control | Function |
|---|---|---|
| Double Tap (x2) | Either Earbud | Play/Pause Music, Answer/End Call |
| Hold | Left Earbud | Previous Song |
| Hold | Right Earbud | Next Song |
| Single Tap (x1) | Left Earbud | Volume Down |
| Single Tap (x1) | Right Earbud | Volume Up |
| Hold | Either Earbud (during call) | Reject Call |
| Triple Tap (x3) | Either Earbud | Activate Voice Assistant (Siri, Google Assistant) |

Figure 3.2: Smart Touch Control Guide. This diagram visually explains the various touch gestures for controlling music playback, calls, and activating the voice assistant on the KT1 Q25 earbuds.
3.3 Charging Case Functions
The charging case not only recharges your earbuds but also serves as a power bank and phone holder.
- Digital Display: The front LED display shows the remaining battery percentage of the charging case and indicates when the earbuds are charging.
- Emergency Power Bank: The 1800mAh capacity charging case can provide emergency power to your smartphone via its USB-A output port.
- Phone Holder: The lid of the charging case is designed to act as a stand for your phone, allowing you to watch videos conveniently.

Figure 3.3: Multi-functional Charging Case. This image demonstrates the charging case's ability to function as an emergency power bank for phones and as a convenient phone holder for media viewing.
4. Maintenance
4.1 Cleaning
Regular cleaning helps maintain sound quality and extends the lifespan of your earbuds.
- Use a soft, dry, lint-free cloth to wipe the earbuds and charging case.
- Remove ear tips and clean them with mild soap and water. Ensure they are completely dry before reattaching.
- Gently clean any debris from the speaker mesh and charging contacts using a dry cotton swab or a small, soft brush.
- After strenuous exercise or if the earbuds get wet, wipe the charging pins with a dry cloth to prevent sweat corrosion.
4.2 Water Resistance (IPX7)
The KT1 Q25 earbuds are IPX7 waterproof, meaning they can withstand submersion in up to 1 meter of water for 30 minutes. This protection is effective against sweat, rain, and accidental splashes. However, they are not designed for swimming or prolonged submersion. Always ensure the charging port is dry before charging.
4.3 Storage
When not in use, store the earbuds in their charging case to protect them from dust, damage, and to keep them charged. Store the case in a cool, dry place away from extreme temperatures.
5. Troubleshooting
If you encounter issues with your KT1 Q25 earbuds, refer to the following common solutions:
- Earbuds not pairing/connecting:
- Ensure both earbuds are charged.
- Turn off Bluetooth on your device, then turn it back on.
- Forget/delete "Q25" from your device's Bluetooth list and attempt to pair again.
- Place both earbuds back into the charging case, close the lid, wait a few seconds, then open the lid to reset them.
- No sound from one earbud:
- Ensure both earbuds are charged and properly connected to your device.
- Try resetting the earbuds by placing them in the case and re-pairing.
- Charging issues:
- Check the charging cable and adapter for damage.
- Ensure the charging contacts on the earbuds and inside the case are clean and free of debris.
- Verify the power source is working correctly.
- Low volume or poor sound quality:
- Adjust the volume on both your device and the earbuds.
- Ensure ear tips are correctly sized and provide a good seal in your ear canal.
- Clean any earwax or debris from the earbud speaker mesh.
For further assistance, please refer to the official user guide PDF available for download or contact customer support.
6. Technical Specifications
Detailed specifications for the KT1 Q25 Bluetooth Headphones:
| Feature | Detail |
|---|---|
| Model Name | Q25 |
| Connectivity Technology | Wireless (Bluetooth) |
| Bluetooth Version | 5.3 |
| Bluetooth Range | 10 Meters |
| Audio Latency | 42 Milliseconds |
| Battery Life (Earbuds) | 7 Hours (single charge) |
| Total Playtime (with Case) | 120 Hours |
| Charging Time | 1.5 Hours |
| Water Resistance Level | IPX7 (Waterproof) |
| Ear Placement | Over Ear (with earhook) |
| Form Factor | In Ear |
| Control Type | Media Control (Touch/Button) |
| Material | Plastic |
| Item Weight | 101.3 Grams (3.57 ounces) |
| Product Dimensions | 0.93 x 0.75 x 0.91 inches |
| Frequency Range | 20 Hz - 20,000 Hz |
| Audio Driver Type | Dynamic Driver (10mm graphene) |
| Compatible Devices | IOS, Android, Tablet, Laptop, Mobile |
7. Warranty & Support
7.1 Product Warranty
KT1 offers a 2-year repair claim warranty for the Q25 Bluetooth Headphones. If the product experiences quality-related issues within this period, KT1 will provide a replacement or a full refund. To activate your warranty, please scan the QR code provided in the product manual upon receipt.
7.2 Customer Support
For any questions, product quality issues, or support inquiries, please contact KT1 customer service. The quickest way to reach us is through your order page on Amazon:
- Go to your Amazon order page.
- Find the order number for your KT1 Q25 product.
- Select the "Contact Seller" option.
We aim to provide a solution within 24 hours.
You can also refer to the official user guide PDF for more detailed information: Download User Guide (PDF)