1. Introduction
The Klarus HM5 is a versatile and lightweight headlamp designed for a wide range of activities, from outdoor exploration and trail running to night work and emergency lighting. Featuring an 800-lumen turbo output and a 99-meter beam distance, it combines floodlight and spotlight capabilities with multiple light sources (white, warm, red) and power options to ensure you're always prepared. Its ergonomic split-type design and high-elasticity headband provide comfort during extended use.

2. Package Contents
Please check the package contents upon receipt to ensure all items are present and in good condition:
- HM5 Headlamp x1
- Micro USB Charging Cable x1
- Battery Housing + LB12 Li-ion Battery (1200mAh) x1
- User Manual x1

3. Key Features
- High Output: 800 lumens Turbo output with a 99-meter beam distance.
- Triple-Light System: Combines white spotlight, white floodlight, and red auxiliary light.
- Multiple Power Options: Supports LB12 Li-ion battery, 3x AAA batteries, or external power bank via Micro USB.
- Lightweight Design: Split-type design for balanced weight distribution, weighing only 90g (with battery).
- Comfortable Wear: High-elasticity, skin-friendly, and replaceable headband with sweat-guiding features and a triple cooling system.
- Intuitive Control: Dual independent switches for easy operation of spotlight and floodlight modes.
- Safety Features: Electronic locking function to prevent accidental activation, high-visibility reflective strip on the headband.
- Durability: IPX6 waterproof rating and 1-meter impact resistance.
- Smart Functions: Battery level indicator, memory function for preferred brightness settings, stable flicker-free light source.
- Adjustable Angle: 45° free adjustable lamp head for precise illumination.



4. Setup
4.1 Battery Installation
The HM5 headlamp offers flexible power options:
- Using the LB12 Li-ion Battery: Insert the included LB12 Li-ion battery (1200mAh) into the battery housing located at the rear of the headband. Ensure correct polarity.
- Using AAA Batteries: If the LB12 battery is not available or depleted, you can use three (3) AAA alkaline batteries (not included) in the battery housing.
4.2 Charging the LB12 Li-ion Battery
To charge the LB12 Li-ion battery:
- Connect the Micro USB Charging Cable to the charging port on the battery housing.
- Connect the other end of the cable to a 5V/0.5A USB power source (e.g., wall adapter, computer USB port, power bank).
- The battery level indicator will show charging status. A full charge typically takes 2-2.5 hours.
4.3 Headband Adjustment
Adjust the high-elasticity headband to fit comfortably and securely around your head. The split-type design helps distribute weight evenly, reducing pressure points.

5. Operation
5.1 Power On/Off and Mode Selection
The HM5 features dual independent switches for easy control of the spotlight and floodlight functions.

- Spotlight Control: Use the dedicated spotlight switch to cycle through High, Medium, Low modes, and to turn the spotlight on/off.
- Floodlight Control: Use the dedicated floodlight switch to cycle through High, Medium, Low modes, and to turn the floodlight on/off.
- Auxiliary Light Modes: Access Red Light, SOS, and Beacon modes via the floodlight switch (specific activation sequence may vary, refer to quick start guide if available).
- Turbo Mode: A quick double-press (or similar action, refer to quick start guide) on one of the switches may activate the 800LM Turbo mode.
- Memory Function: The headlamp will remember your last used brightness setting for convenience.


5.2 Electronic Locking Function
The electronic locking function prevents accidental activation and power drain during storage or transport. Refer to the quick start guide for specific instructions on how to activate and deactivate this feature.
5.3 Adjusting Lamp Head Angle
The lamp head can be freely adjusted up to 45 degrees. This allows you to direct the light precisely where needed, enhancing efficiency and reducing unnecessary illumination.

6. Maintenance
6.1 Cleaning
- The high-elasticity headband is replaceable and designed for easy cleaning. Remove it from the headlamp unit and wash with mild soap and water. Allow to air dry completely before reattaching.
- Wipe the headlamp body with a soft, damp cloth. Do not use abrasive cleaners or solvents.
6.2 Battery Care
- Recharge the LB12 Li-ion battery regularly, especially if it has been stored for an extended period.
- Store the headlamp and batteries in a cool, dry place away from direct sunlight and extreme temperatures.
- If using AAA batteries, remove them if the headlamp will not be used for a long time to prevent leakage.
6.3 Water Resistance
The HM5 has an IPX6 waterproof rating, meaning it is protected against powerful water jets. While it performs excellently in various weather conditions, it is not designed for submersion. Ensure the charging port cover is securely closed to maintain water resistance.

7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Headlamp does not turn on. | Battery is depleted or incorrectly installed. Electronic lock is active. | Recharge or replace batteries. Ensure batteries are installed with correct polarity. Deactivate electronic lock (refer to operation section). |
| Light output is dim. | Battery is low. | Recharge the LB12 Li-ion battery or replace AAA batteries. |
| Light flickers. | Unstable battery connection or low battery. | Ensure batteries are securely seated. Recharge or replace batteries. The HM5 features a constant current drive to prevent flickering, so if flickering persists, contact support. |
8. Specifications
| Attribute | Detail |
|---|---|
| Product Model | HM5 |
| Brand Name | KLARUS |
| Light Source | LED bulbs |
| Maximum Brightness | 800 lumens |
| Longest Range | 99 meters |
| Beam Angle | 180° |
| Battery Type | LB12 Li-ion (1200mAh) / 3*AAA Alkaline Batteries |
| Battery Capacity | 1200mAh (LB12) |
| Maximum Runtime | 80 hours |
| Charging Time | 2-2.5 Hours |
| Working Voltage | 2.5-5V |
| Charging Currents | 5V/0.5A |
| Waterproof Rating | IPX6 |
| Impact Resistance | 1 meter |
| Dimensions | 61.95mm x 30.2mm x 18.2mm |
| Weight | 90g (with battery) |
| Certification | CE, ROHS |
| Origin | Mainland China |

9. User Tips
- For prolonged comfort during activities like trail running or hiking, ensure the headband is adjusted snugly but not too tight. The split-type design is intended to minimize pressure.
- Utilize the 45° adjustable lamp head to direct light precisely, conserving battery life by avoiding unnecessary illumination of peripheral areas.
- When storing the headlamp in a bag or pocket, activate the electronic locking function to prevent accidental power-on and battery drain.
- Take advantage of the triple light sources: use white light for general illumination, warm light for better penetration in fog or rain, and red light to preserve night vision or for signaling.
- Regularly check the battery level indicator, especially before extended use, to ensure sufficient power.

10. Warranty and Support
10.1 Warranty Information
The Klarus HM5 headlamp comes with a 2-year warranty from the date of purchase. This warranty covers manufacturing defects and faults under normal use. Please retain your proof of purchase for warranty claims.
10.2 Customer Support
For any questions, technical assistance, or warranty claims, please contact the seller or Klarus customer service. Refer to your purchase documentation for specific contact details.





