1. Mawu Oyamba
This manual provides comprehensive instructions for the safe and effective operation, maintenance, and troubleshooting of your Sofirn HS41 4000 Lumen Rechargeable LED Headlamp. Please read this manual thoroughly before using the product to ensure optimal performance and longevity.

The Sofirn HS41 can be used as a headlamp with the included headband or as a versatile right-angle flashlight, featuring a magnetic base for hands-free operation.
2. Zamalonda Zathaview
Zofunika Kwambiri
- Zotulutsa Zapamwamba: Equipped with 4*SST20 LEDs, delivering up to 4000 lumens with a beam distance of 325 meters.
- Kulipiritsa USB-C: Built-in Type-C port for convenient and fast charging.
- Nthawi Yowonjezera: Up to 29.5 days of usage in Moonlight mode on a single charge.
- Mitundu Yambiri Yowunikira: 9 modes including Moonlight, Eco, Low, Medium, High, Turbo, Strobe, SOS, and Beacon.
- Mapangidwe Okhazikika: IPX8 waterproof rating and impact resistance up to 1 meter.
- Kugwiritsa Ntchito Mosiyanasiyana: 90-degree L-shape design allows use as a headlamp or right-angle flashlight with a powerful magnetic tailcap.
- Zomwe Zachitetezo: Advanced Temperature Regulation (ATR) and Low Voltage Chitetezo.

This image highlights the main features of the HS41, such as its multiple lighting modes, extended battery life, convenient USB-C charging, and robust IP68 waterproof design.
Zomwe zili mu Bokosi
- Sofirn HS41 Headlamp
- 1x Rechargeable Lithium Polymer Battery
- 1x Sturdy Head Band
- 1x Type-C Charging Cable
- 1x Buku Logwiritsa Ntchito
3. Malangizo a Chitetezo
- Do not shine the light directly into eyes. The high lumen output can cause temporary vision impairment.
- Khalani kutali ndi ana.
- Use only the specified battery type. Incorrect battery usage can lead to damage or safety hazards.
- Osamasula mutuwoamp, as this may void the warranty and cause damage.
- Pewani kuulula mutuamp kutentha kwambiri kapena kuwala kwa dzuwa kwa nthawi yayitali.
- Ensure the USB-C port cover is securely closed when not charging to maintain water resistance.
4. Kukhazikitsa
Kuyika kwa Battery
- Chotsani kapu ya mchira wa mutuamp.
- Insert the included 18650 Lithium Polymer battery with the positive (+) end facing towards the head of the light.
- Limbitsaninso kapu ya mchira molimba kuti muwonetsetse kuti ikugwirizana bwino ndi kukana madzi.
Kulipira
The HS41 features a built-in USB-C charging port.
- Locate the USB-C charging port on the side of the headlamp and open its protective cover.
- Connect the provided Type-C charging cable to the headlamp and to a USB power source (e.g., wall adapter, power bank, computer).
- Chizindikiro chowunikira pamutuamp will show the charging status:
- Chofiira: Kulipiritsa kuli mkati.
- Green: Zolipiridwa kwathunthu.
- Charging typically takes approximately 2.5 hours for a full charge.
- Once charging is complete, disconnect the cable and securely close the USB-C port cover to maintain water resistance.

Mutuamp features a built-in USB-C port for convenient and fast charging. The indicator light changes color to show charging status.
5. Malangizo Ogwiritsira Ntchito
The HS41 is operated via a single side switch.
Basic Operation
- Yatsani/Zimitsani: Single click the switch to turn the light on or off.
- Change Brightness (Rampndi): When the light is on, press and hold the switch to cycle through brightness levels (Moonlight, Eco, Low, Medium, High, Turbo). Release the switch at your desired brightness.
- Memode Memode: Mutuamp will remember the last used brightness level (except for special modes like Strobe, SOS, Beacon).
Quick Access Modes
- Kuwala kwa mwezi: From OFF, press and hold the switch for 1 second to activate Moonlight mode.
- Mawonekedwe Apamwamba: From OFF, double-click the switch to directly activate High mode.
- Njira ya Strobe: From OFF, triple-click the switch to activate Strobe mode.

Mutuamp's single button allows for quick access to frequently used modes: press and hold for Moonlight, double-click for High, and triple-click for Strobe.
Special Modes (Strobe, SOS, Beacon)
- From ON, triple-click the switch to enter Strobe mode.
- While in Strobe mode, double-click to cycle through SOS and Beacon modes.
- Single click to turn off or return to the previous brightness level.

The HS41 delivers a powerful 4000 lumens, providing extensive illumination for outdoor activities. The image shows the light beam and icons representing modes like Moonlight, Eco, Low, Medium, High, Turbo, Strobe, Beacon, and SOS.
Ntchito ya Lockout
To prevent accidental activation, the HS41 features a lockout mode.
- Yambitsani Lockout: From OFF, perform four quick clicks of the switch. The LED will blink twice to confirm lockout mode is active.
- Tsetsani Lockout: Perform four quick clicks of the switch. The light will turn on to the last used mode.

Mutuamp features a lockout mode to prevent accidental activation. It is engaged by four quick clicks when the light is off, indicated by two blinks.
Chizindikiro cha Mphamvu
The power indicator displays the battery level for 5 seconds every time the light is turned on.
- Green: Remaining battery power is good (70% - 100%).
- Chofiira: Remaining battery power is poor (30% - 69%).
- Kunyezimira Kofiyira: Critical power (less than 30%). Recharge the battery as soon as possible.

The integrated power indicator provides real-time battery status: green (70-100%), red (30-69%), and flashing red (below 30%), prompting timely recharging.
Kutsika Voltagndi Chenjezo
Pamene batire voltage drops below 3V, the indicator will flash red, and the headlamp will vibrate twice with a 1-minute interval between each vibration. This signals that the battery needs to be recharged immediately.

Pamene batire voltage imatsika pansi pa 3V, mutuamp's indicator will flash red, and the device will vibrate twice with a one-minute interval, signaling a low voltage chikhalidwe.
6. Kusamalira
Kuyeretsa
- Pukuta mutuamp ndi zofewa, damp nsalu yochotsa litsiro ndi zinyalala.
- Do not use abrasive cleaners or solvents, as they may damage the finish or internal components.
- Clean the threads of the tail cap and O-rings periodically. Apply a thin layer of silicone grease to the O-rings to maintain water resistance.
Kusamalira Battery
- Recharge the battery regularly, especially if the headlamp sichidzagwiritsidwa ntchito kwa nthawi yayitali.
- Sungani batire pamalo ozizira, owuma.
- If storing for a long time, remove the battery from the headlamp to prevent parasitic drain.
Kusungirako
- Sungani mutuamp in a dry environment, away from direct sunlight and extreme temperatures.
- Onetsetsani mutuamp is in lockout mode or the battery is removed during storage to prevent accidental activation.
7. Mavuto
| Vuto | Chifukwa Chotheka | Yankho |
|---|---|---|
| Kuwala sikuyatsa | Battery yatha Battery incorrectly inserted Tail cap loose Mutuamp in lockout mode | Limbikitsaninso batire Onani polarity ya batri Mangitsani kapu ya mchira Deactivate lockout mode (4 clicks) |
| Kuwala kumakhala kowala kapena kowala | Batire yotsika Poor contact between battery and terminals Dirty threads/contacts | Limbikitsaninso batire Ensure battery is fully inserted Clean threads and contacts with a cotton swab |
| Kulipira sikukugwira ntchito | Chingwe chochapira chalakwika USB power source insufficient Charging port dirty | Yesani chingwe china cha USB-C Use a reliable USB power adapter Clean the USB-C port gently |
| Mutuamp gets hot quickly | Operating in Turbo/High mode for extended periods ATR (Advanced Temperature Regulation) is active | This is normal. The ATR system will automatically reduce brightness to prevent overheating. Reduce brightness manually if desired. |
8. Zofotokozera
| Mbali | Kufotokozera |
|---|---|
| Chitsanzo | HS41 |
| Gwero Lowala | 4*SST20 LEDs |
| Kuwala Kwambiri | 4000 Lumens |
| Beam Distance | 325 mita |
| Gwero la Mphamvu | 1x Rechargeable Lithium Polymer Battery (included) |
| Kulipira Port | USB Type-C |
| Zakuthupi | Aluminiyamu Aloyi |
| Kukaniza Madzi | IPX8 (submersible up to 2 meters for 30 minutes) |
| Impact Resistance | 1 mita |
| Makulidwe | 1"D x 1"W x 1"H (approx. 30.1mm x 29mm x 115mm) |
| Kulemera | 0.71 Pounds (approx. 11.4 ounces / 79g without battery) |
| Zapadera | Adjustable Light Modes, Adjustable Strap, Magnetic Base, Low Voltage Warning, Advanced Temperature Regulation |
9. Chitsimikizo ndi Thandizo
For warranty information or technical support, please contact the seller, 77 Outdoor Shop, or the manufacturer, Sofirn, directly through their official channels. Please retain your proof of purchase for any warranty claims.





