1. Introduction
Thank you for choosing the Gaciron V20CH-600 Bike Helmet Light. This innovative light combines a powerful front light and a visible rear light into a single, compact unit, designed for enhanced safety and visibility during cycling. Its lightweight design and multiple mounting options make it a versatile accessory for any cyclist. Please read this manual carefully before use to ensure proper operation and maintenance.

2. Key Features
- Headlight & Taillight 2-in-1 Design
- Max Brightness: 600 lumens (500lm Headlight, 100lm Rear Light)
- Helmet Mounting capability
- Lightweight Body (approx. 106g)
- IPX4 Waterproof rating
- USB Rechargeable with 2500mAh 18650 Lithium Battery
- Side lights for improved night cycling safety
- Rear COB light source, rotatable for daytime (white) or night (red) use
- Multiple installation options

3. Package Contents
Please check the box for the following items:
- 1 x V20CH-600 Helmet Light
- 1 x H07P Holder
- 1 x Micro USB Cable
- 1 x User Manual
- 1 x Packaging Box

4. Specifications
| Attribute | Value |
|---|---|
| Model | V20CH-600 |
| Brand Name | GACIRON |
| Main LED | CREE XPG3 |
| Headlight Max Brightness | 500 Lumens |
| Rear Light Max Brightness | 100 Lumens |
| Headlight Floodlight Angle | 95° |
| Rear Light Floodlight Angle | 160° |
| Battery | 1*18650 Lithium 2500mAh |
| Input | Micro 5V/0.7A |
| Beam Distance | >200m |
| Waterproof Level | IPX4 |
| Net Weight | About 106g |
| Size | 105*36*31mm |
| Material | Plastic Body |
| Charging Time | 4 hours |

5. Setup
5.1. Charging the Device
The V20CH-600 is equipped with a 2500mAh 18650 Lithium battery and is USB rechargeable. Before first use, fully charge the device.
- Connect the provided Micro USB cable to the charging port on the light.
- Connect the other end of the USB cable to a power source such as a power bank, laptop, car charger, or wall charger (5V/0.7A).
- The charging indicator will show the battery level:
- 1-20%: Red light
- 21-60%: Yellow light
- 61-100%: Blue light
- Charging takes approximately 4 hours. Once fully charged, the indicator will show a constant blue light.

5.2. Installation
The V20CH-600 offers multiple installation methods to suit various cycling environments.
- Helmet Mounting: Use the H07P holder to securely attach the light to your helmet. This is ideal for illuminating your line of sight and increasing your visibility to others. The light's lightweight body (106g) ensures minimal burden on the rider.
- Handlebar Mounting: The light can be mounted above or beneath the handlebar using appropriate mounts (sold separately or included depending on package variant).
- Other Locations: The versatile design allows for mounting on other parts of the bike like the fork or chain stay, depending on your specific needs and available accessories.


6. Operating Instructions
6.1. Power On/Off
To turn the front and rear lights on or off, long press the respective switch button for approximately 0.75 seconds.
6.2. Switching Modes
The V20CH-600 features independent control for the front and rear lights, each with multiple modes.
- Front Light Modes: Short press the front light switch button to cycle through the following modes:
- High Steady: 500 lumens, approx. 1 hour 65 minutes runtime
- Low Flash: 100 lumens, approx. 10 hours 50 minutes runtime
- Low Steady: 100 lumens, approx. 8 hours 20 minutes runtime
- Medium Steady: 250 lumens, approx. 3 hours 20 minutes runtime
- Rear Light Modes: Short press the rear light switch button to cycle through the following modes:
- White Steady: 100 lumens, approx. 10 hours runtime
- White Daytime: 100 lumens, approx. 63 hours 20 minutes runtime
- Red Light Steady: 5 lumens, approx. 40 hours runtime
- Red Flash: 5 lumens, approx. 81 hours 40 minutes runtime
Note: The running time is approximately 1 hour 30 minutes if using the high steady 500 lm front light and white steady 100 lm rear light simultaneously.

6.3. Dual Button Operation
The two buttons for the front and rear lights can be operated independently, allowing you to customize your lighting setup. They can also be turned on simultaneously.

6.4. Side Lights
The V20CH-600 is designed with side lights to improve your awareness and visibility to others, especially during night cycling.

7. Maintenance
- Cleaning: Wipe the light with a soft, damp cloth. Do not use abrasive cleaners or solvents.
- Storage: Store the light in a cool, dry place when not in use. If storing for an extended period, charge the battery every 3-6 months to prolong its lifespan.
- Water Resistance: The light has an IPX4 waterproof rating, meaning it is resistant to splashing water from any direction. Do not submerge the device in water.
8. Troubleshooting
- Light not turning on: Ensure the battery is charged. If the battery is low, connect the light to a power source using the USB cable.
- Light modes not changing: Ensure you are short-pressing the correct button for the desired light (front or rear).
- Charging issues: Check the USB cable and power source for proper connection. Try a different cable or power adapter if necessary.
- Mount not secure: Re-check the installation of the H07P holder or other mounts to ensure they are tightened correctly.
9. User Tips
- For maximum visibility, especially in low-light conditions, consider using both the front and rear lights simultaneously.
- The rotatable rear COB light source can be adjusted to face forward for daytime visibility (white light) or backward for night visibility (red light).
- Regularly check the battery level before long rides to avoid running out of power unexpectedly.
- The light is lightweight and designed for helmet mounting, providing illumination directly where you look and making you more noticeable to others.
10. Warranty and Support
For warranty information, technical support, or any questions regarding your Gaciron V20CH-600 Bike Helmet Light, please contact the seller or manufacturer directly. Keep your purchase receipt as proof of purchase.
11. Product Video
Watch this video for a visual demonstration of the Gaciron V20CH-600's features and installation options.





