1. Introduction
Thank you for choosing the NATFIRE Bike Light KX Series. This manual provides essential information for the safe and efficient use of your bicycle headlight. The KX Series offers powerful illumination, multiple lighting modes, and a durable aluminum construction, designed to enhance your visibility and safety during cycling. Please read this manual thoroughly before use and keep it for future reference.

2. Product Overview
The NATFIRE Bike Light KX Series features a range of powerful LED bicycle headlights designed for various cycling needs. Key features include:
- Super Bright Illumination: Equipped with 6, 8, or 12 LEDs, providing strong lumen output and a beam length of up to 300+ feet.
- Multiple Light Modes: Up to five modes (High, Medium, Low, Strobe, SOS) for adaptable lighting in different conditions.
- Durable Construction: Made with an aluminum shell for enhanced durability and heat dissipation.
- Battery Indicator: The KX12D Pro model features a digital display showing remaining battery time.
- USB Rechargeable: Type-C (KX12D Pro) or Micro-USB (KX8F, KX6) charging, eliminating the need for disposable batteries.
- Power Bank Function: Can be used to charge your smartphone or other devices on the go.
- IPX5 Waterproof: Protected against splashing water from any angle, suitable for rainy weather.
- 360° Rotatable Mount: Allows for easy adjustment of the light angle.
- Anti-Glare Design: Innovative design to prevent blinding oncoming traffic and pedestrians, increasing safety.

3. Specifications
| Feature | Bicycle Light KX12D | Bicycle Light KX8F | Bicycle Light KX6 |
|---|---|---|---|
| LED Count | 12 | 8 | 6 |
| Body Material | Aluminum Shell | ||
| Size (approx.) | 125x45x35mm | 117x45x31.5mm | 107x45x31.5mm |
| Light Modes | 5 | 5 | 3 |
| Net Weight (approx.) | 258g | 249g | 193g |
| Battery Capacity | 10000mAh | 10000mAh | 2400mAh |
| Battery Indicator | Yes (Digital Display) | No | No |
| Range (approx.) | 150-300M | ||
| USB Rechargeable | Type-C | Micro-USB | Micro-USB |
| Power Bank Function | Yes | ||
| 360° Rotation | Yes | ||
| Waterproof Rating | IPX5 | ||
| Working Voltage | 3.7V | ||
| Mounting Placement | Handlebar | ||
| Certification | CE | ||

4. Setup and Installation
- Attach the Mount: Secure the adjustable mount to your bicycle's handlebar. The mount is designed for pipe diameters between 20-36.5mm and requires no tools for installation.
- Insert the Light: Slide the NATFIRE Bike Light onto the mount until it clicks securely into place.
- Adjust Angle: The mount allows for 360° rotation. Adjust the light to your desired angle for optimal visibility and to avoid blinding others.
- Remove for Charging/Security: The light can be easily detached from the mount for recharging or to prevent theft.

5. Operating Instructions
- Power On/Off: Press and hold the power button (usually indicated by a 'U' or circular icon) for a few seconds to turn the light on or off.
- Change Light Modes: Once the light is on, short press the power button to cycle through the available light modes (High, Medium, Low, Strobe, SOS for KX12D/KX8F; 3 modes for KX6).
- Battery Indicator (KX12D Pro only): The digital display on the KX12D Pro shows the remaining battery percentage and estimated runtime.
- Power Indicator (All models with indicator): When power is sufficient, the green light remains solid. When power is insufficient, the green light will breathe (pulse).

The innovative anti-glare design helps to level off the upper light beam, preventing it from intruding on oncoming traffic and increasing rider safety.

6. Charging
The NATFIRE Bike Light KX Series is USB rechargeable. The KX12D Pro uses a Type-C port, while the KX8F and KX6 use Micro-USB.
- Connect the Cable: Use the provided charging cable to connect the bike light to a USB power source. This can be your computer, a wall charger (5V/1A input recommended), or a power bank.
- Charging Indication: During charging, the green indicator light will breathe (pulse). Once fully charged, the green light will remain solid.
- Power Bank Function: The KX Series bike lights can also function as a power bank. Connect your smartphone or other USB-powered device to the light's output port using a suitable cable to charge it while riding. Built-in intelligence IC prevents overcharge or over-discharge, extending battery life.


7. Maintenance
- Regular Charging: If you do not use the bike light for an extended period, charge it every three months to maintain battery health.
- Cleaning: Wipe the light with a soft, damp cloth. Do not use harsh chemicals or abrasive materials.
- Storage: Store the light in a cool, dry place away from direct sunlight and extreme temperatures.
- Water Resistance: The light has an IPX5 waterproof rating, meaning it is resistant to water splashes. Do not immerse the bicycle light in water.

8. Troubleshooting
- Q: The light won't turn off after charging.
- A: This could indicate a software glitch or a stuck button. Try fully discharging the battery and then recharging it. If the issue persists, contact customer support for assistance.
- Q: Can I use the light while it's charging?
- A: Yes, the light is designed to operate while being charged, for example, when connected to a power bank during a ride.
- Q: The light is not as bright as expected or has a short runtime.
- A: Ensure the battery is fully charged. Check if you are using the correct light mode (higher brightness modes consume more power). Over time, battery capacity can degrade; ensure proper charging habits as described in the Maintenance section.
9. User Tips
- Maximize Visibility: Utilize the High beam mode for maximum visibility on dark roads, and switch to Medium or Low in well-lit areas to conserve battery.
- Safety First: Always use the anti-glare feature to avoid dazzling other road users, especially in urban environments.
- Stay Charged: Regularly check the battery indicator (on KX12D Pro) or charge the light every few rides to ensure you always have sufficient power.
- Dual Functionality: Remember your bike light can double as a power bank for your phone, which can be very useful on longer rides.
- Secure Mounting: Always ensure the light is securely mounted to your handlebar to prevent it from falling off during bumpy rides.
10. Safety Information
- Eye Safety: Do not shine the light directly into your or others' eyes. The high intensity can cause temporary vision impairment.
- Flammable Materials: Keep the bike light away from flammable and explosive materials.
- Children: Place the bicycle lights correctly and keep them out of reach of children to avoid accidents.
- Water Immersion: While IPX5 rated for water resistance, do not immerse the light in water.
- Proper Use: Use the product only for its intended purpose as a bicycle headlight.
11. Warranty and Support
For warranty information, product support, or any inquiries regarding your NATFIRE Bike Light KX Series, please contact the NATFIRE Official Store or your point of purchase. Keep your purchase receipt as proof of purchase for any warranty claims.




