Introduction
The NEBO MYCRO 400 is a compact and versatile rechargeable headlamp and cap light designed for various activities requiring hands-free illumination. This manual provides essential information for the safe and effective use of your device.

Image: The NEBO MYCRO 400 headlamp attached to its adjustable headband.
Safety Information
- Do not look directly into the LED light when activated, as it may cause temporary vision impairment.
- Keep out of reach of children.
- Do not disassemble the device; refer to qualified personnel for repairs.
- Ensure the Micro-USB port cover is securely closed when not charging to maintain water resistance.
- Dispose of the battery responsibly according to local regulations.
Package Contents
- NEBO MYCRO 400 Headlamp
- Adjustable Headstrap
- Micro-USB Charging Cable
Product Features
- 400-Lumen Output: Provides powerful illumination for various tasks.
- 6 Light Modes: Includes Turbo, High, Medium, Low, Red, and Green light options.
- Water Resistant (IPX4): Protected against splashing water from any direction.
- Impact-Resistant: Durable construction for outdoor and work environments.
- Detachable Cap Clip: Allows for versatile attachment to hat brims.
- Adjustable Tilt: The light can be angled to direct illumination where needed.
- Rechargeable: Integrated Lithium polymer battery with Micro-USB charging.
- Smart Power Control: Ensures smooth transitions between light modes and extends battery life.
- Direct-to-Red Functionality: Preserves night vision by allowing direct access to the red light mode.

Image: Illustration of the NEBO MYCRO 400 headlamp's various light modes, including Turbo (400 lumens), High (150 lumens), Medium (50 lumens), Low (15 lumens), Red, and Green.

Image: The NEBO MYCRO 400 headlamp attached to the brim of a baseball cap, demonstrating its cap-compatible feature.

Image: A hand placing the compact NEBO MYCRO 400 headlamp into a backpack pocket, highlighting its portability.
Setup
Attaching the Headlamp
The MYCRO 400 can be used with the adjustable headstrap or clipped directly onto a cap. To attach to the headstrap, slide the headlamp into the designated slot on the strap. For cap use, detach the headlamp from the strap by pressing the release tabs and clip it onto your cap brim.

Image: Close-up of the NEBO MYCRO 400 headlamp's comfortable, reflective headband.
Initial Charge
Before first use, fully charge the headlamp. Refer to the 'Charging' section for detailed instructions.
Operating Instructions
Power On/Off
Press the power button located on the side of the headlamp to turn it on. Press again to cycle through modes. To turn off, press and hold the power button for approximately 2 seconds, or cycle through all modes until the light turns off.
Light Modes
The MYCRO 400 features 6 light modes:
- Turbo (400 Lumens): Provides maximum brightness for short bursts. Activate by pressing and holding the power button from any ON mode. It will revert to the previous mode after 30 seconds.
- High (150 Lumens): Optimal visibility for general use.
- Medium (50 Lumens): Balanced output for extended use.
- Low (15 Lumens): Conserves battery for prolonged use.
- Red (10 Lumens): Preserves night vision. Activate directly by pressing the power button from OFF.
- Green (10 Lumens): Ideal for activities like hunting or wildlife observation, as it is less disruptive to animals.
Adjusting Angle
The headlamp unit can be tilted up or down to adjust the beam angle, allowing you to direct light precisely where it is needed for hands-free operation.

Image: A person performing car maintenance with the NEBO MYCRO 400 headlamp illuminating their work area, demonstrating hands-free lighting.
Video: A demonstration of the NEBO MYCRO USB Rechargeable Adjustable Headlamp and Cap Light, showcasing its features and functionality.
Charging
The NEBO MYCRO 400 is equipped with a rechargeable Lithium polymer battery. To charge:
- Locate the Micro-USB charging port on the side of the headlamp. It is protected by a rubber cover.
- Gently lift the rubber cover to expose the port.
- Connect the included Micro-USB cable to the headlamp and the other end to a USB power source (e.g., computer, wall adapter).
- The charging indicator light will show the charging status.
- Charging typically takes approximately 2 hours.
- Once fully charged, disconnect the cable and securely close the rubber cover to maintain water resistance.

Image: The NEBO MYCRO 400 headlamp with its Micro-USB charging port exposed and connected to a charging cable.
Maintenance
- Cleaning: Wipe the headlamp with a soft, damp cloth. Do not use abrasive cleaners or solvents.
- Storage: Store the headlamp in a cool, dry place when not in use. If storing for extended periods, ensure it is fully charged every 3-6 months to maintain battery health.
- Strap Care: The adjustable headstrap can be hand-washed with mild soap and water if it becomes dirty. Ensure it is completely dry before reattaching the headlamp.
Troubleshooting
- Light not turning on: Ensure the battery is charged. Connect to a power source and check the charging indicator.
- Light is dim: The battery may be low. Recharge the device.
- Charging issue: Verify the Micro-USB cable is securely connected to both the headlamp and the power source. Try a different USB port or cable.
- Water ingress: If water enters the device, immediately turn it off and allow it to dry completely before attempting to use it again. Ensure the charging port cover is always sealed when not charging.
Specifications
| Feature | Value |
|---|---|
| Light Output (Max) | 400 Lumens (Turbo) |
| Light Source Type | LED |
| Power Source | Battery Powered (Lithium Polymer) |
| Battery Capacity | 200 mAh (3.7V) |
| Charging Time | Approx. 2 hours |
| Run Time (Low) | Up to 10 hours |
| Water Resistance Level | IPX4 (Water Resistant) |
| Material | Plastic |
| Item Weight | 2.82 ounces |
| Product Dimensions | 1" x 1.2" x 2.85" (Light only) |
Warranty Information
The NEBO MYCRO 400 Rechargeable Headlamp comes with a 1-year warranty. For specific details regarding warranty claims and coverage, please refer to the official NEBO website or contact customer support.
Support
For further assistance, technical support, or inquiries regarding your NEBO MYCRO 400 headlamp, please visit the official NEBO website or contact their customer service department. Contact information can typically be found on the product packaging or the manufacturer's website.





