The Sofirn HS41 4000 Lumen 325m Throw Rechargeable Headlamp with 21700 Battery is a versatile, high-performance light designed for outdoor use, ideal for camping, hiking, and emergency situations. For example, its 4000-lumen output can illuminate a path up to 325 meters, ensuring reliable visibility with a bright, wide beam. With built-in USB-C charging, a side e-switch interface, and a durable build, it offers practical functionality. Featuring a 1-year warranty, this Sofirn HS41 for Outdoor Use suits campers, hikers, and outdoor enthusiasts.
Powerful Illumination for Outdoor Use
The Sofirn HS41 features four Luminus SST-20 LEDs, delivering a maximum output of 4000 lumens with a beam throw of 325 meters, powered by an included 21700 Li-ion battery (5000mAh). It offers multiple modes, controlled by a side e-switch, with the following lumen outputs and runtimes:
Turbo: 4000 lumens for approximately 1 minute (steps down after initial output)
High: 1000 lumens for approximately 2 hours
Medium: 200 lumens for approximately 10 hours
Low: 1 lumen for approximately 29.5 days
Moonlight: 0.5 lumens for approximately 35 days
Strobe: 4000 lumens (runtime not specified)
SOS: 4000 lumens (runtime not specified)
Beacon: 4000 lumens (runtime not specified)
The flashlight charges via a built-in USB-C port, taking about 2.5 hours with a 5V/2A charger, and includes an indicating switch (green for 70-100% power, red for 30-69%, flashing red for less than 30%) that displays for 5 seconds after turning on. It has an IP68 waterproof rating, suitable for submersion up to 1 meter, and features a simple UI, though prolonged use on Turbo may generate heat, requiring careful handling.
Durable and Compact Design
The Sofirn HS41 is constructed from A6061-T6 aluminum alloy with a Type III hard-anodized finish, offering durability and corrosion resistance for outdoor conditions like camping or hiking. It measures approximately 115mm in length with a head diameter of 30.1mm, weighing 79g without the battery (approximately 156g with the included 21700 battery), making it comfortable for extended wear. The flashlight features a detachable design for use as a handheld flashlight, a magnetic tailcap, and an adjustable headband, though its weight with the battery may require periodic adjustment during long use.
Designed for Outdoor and Everyday Use
The Sofirn HS41 4000 Lumen 325m Throw Rechargeable Headlamp with 21700 Battery for Outdoor Use is tailored for campers, hikers, and outdoor enthusiasts needing a reliable, hands-free light for nighttime activities, emergencies, or work. For example, its 29.5-day low mode ensures prolonged runtime for extended trips, while the detachable design allows versatile use as a handheld flashlight, though the side e-switch UI requires practice to cycle through nine modes (click to turn on/off, hold to adjust, double-click for strobe), and the magnetic tailcap may not suit all surfaces. The USB-C charging and IP68 rating enhance its reliability, but users should avoid direct eye exposure due to its intensity and rinse it with fresh water after use to maintain performance. The HS41's affordable price, included 21700 battery, and multifunctional design make it a practical choice for outdoor scenarios, offering a balance of power and convenience, though users should plan for heat management and UI familiarity.
Package Dimensions and Weight
Package Width: 7.0 cm
Package Length: 12.0 cm
Packaged Height: 4.5 cm
Packaged Weight: 200g
Assembled Product Dimensions and Weight
Assembled Product Width: 3.01 cm
Assembled Product Length: 11.5 cm
Assembled Product Height: 3.01 cm
Key Features and Specs
The Sofirn HS41 4000 Lumen 325m Throw Rechargeable Headlamp with 21700 Battery is built for performance. It features four Luminus SST-20 LEDs with a 4000-lumen output, 325m throw, multiple modes (Turbo, High, Medium, Low, Moonlight, Strobe, SOS, Beacon), a 5000mAh 21700 battery (included) with up to 29.5 days runtime on low, USB-C charging (about 2.5 hours with 5V/2A), IP68 waterproofing (up to 1 meter), reverse polarity protection, a side e-switch, a magnetic tailcap, and includes a headband, USB-A to USB-C cable, 2x O-rings, and manual, with a 1-year warranty for reliability. Its dimensions of 115mm x 30.1mm and weight of approximately 156g (with battery) make it a practical choice for outdoor users. This headlamp excels for illuminating trails, close-up tasks, or emergencies during camping, hiking, or outdoor use, providing reliable, versatile performance for various scenarios.
Specifications Overview
Type: Rechargeable Headlamp
Purpose: Camping, Hiking, Emergency Situations
LED: 4x Luminus SST-20
Output: Up to 4000 Lumens
Beam Throw: 325m
Modes: Turbo, High, Medium, Low, Moonlight, Strobe, SOS, Beacon
Runtimes:
Turbo: 4000 lumens for approximately 1 minute (steps down after)
High: 1000 lumens for approximately 2 hours
Medium: 200 lumens for approximately 10 hours
Low: 1 lumen for approximately 29.5 days
Moonlight: 0.5 lumens for approximately 35 days
Battery: 1x 5000mAh 21700 Li-ion (Included)
Charging: USB-C (about 2.5 hours with 5V/2A)
Waterproof: IP68 (Up to 1 Meter)
Impact Resistance: 1 Meter
Dimensions: 115mm (Length) x 30.1mm (Head Diameter)
Weight: 79g (Without Battery), Approximately 156g (With Battery)
Warranty: 1 Year
Package Contents
The package includes:
Sofirn HS41 Headlamp
1x 5000mAh 21700 Li-ion Battery
Headband
USB-A to USB-C Cable
2x O-Rings
User Manual
Note: Ensure the flashlight is turned off or locked (four quick clicks to activate lockout mode) after use to prevent accidental activation, which could drain the battery; the side e-switch can be sensitive. Use the included 21700 battery with proper polarity (positive terminal toward the head), and remove the insulating paper before first use or charging. The IP68 rating supports submersion up to 1 meter; avoid prolonged submersion beyond this limit. Handle with care during Turbo mode to avoid burns due to heat buildup, and do not shine the light directly into eyes due to its intensity. Store in a dry place to maintain reliability, and use a 5V/2A charger (not included) for optimal charging. Unscrew the tailcap half a turn during storage to prevent self-discharge.
What's in the box
1 X Sofirn HS41 Headlamp
