SPECIFICATIONS

The SOFIRN HS41 is a high-output, USB-C rechargeable headlamp with a single large 21700 battery, providing bright illumination and versatile functionality for camping, hiking, work, search & rescue, and everyday tasks.

---

💡 Key Features

⚡ 4000 Lumens Maximum Output

• Powered by four high-performance Luminus SST-20 LEDs, the HS41 can deliver up to 4000 lumens of light output — bright enough for long-range visibility and wide area lighting.

• Beam throw can reach approximately 325 meters, making it suitable for trail navigation and open-space illumination.

🔋 21700 Battery & USB-C Recharge

• Uses one 21700 rechargeable Li-ion battery (5000 mAh) that supports long runtimes — up to ≈29.5 days on the lowest moonlight mode (1 lm) for extended standby or emergency use.

• Built-in USB-C charging port — convenient for charging from power banks, USB adapters, or portable solar chargers.

• Battery level indicator shows charge state (green = good, red = low, flashing red = critical).

🔄 Multiple Lighting Modes

• Offers 9 lighting modes: Moonlight, Eco, Low, Medium, High, Turbo, Strobe, SOS, and Beacon — giving you flexible brightness and signaling options.

• Modes are typically accessed through a side electronic switch, with different click/hold sequences for Turbo or special modes.

🧲 Magnetic Tail & Versatile Design

• The magnetic tail cap allows attachment to metal surfaces (car hoods, tools, gear), enabling hands-free work lighting.

• Can be used as a headlamp or handheld flashlight (detachable from the headband), increasing its versatility.

📏 Durable & Weather-Resistant

• Built from A6061-T6 aluminum alloy for rugged durability, with a toughened glass lens for impact resistance.

• IP68 waterproof rating — safe in heavy rain and temporary submersion (suitable for outdoor use, not deep-water activities).

• Drop-tested for approximately 1 meter resistance.

🎯 Beam Characteristics

• Spotlight angle ~25° for distance visibility and floodlight angle ~96° for broader area coverage.

• Good balance of throw and flood makes it adaptable for trail navigation, campsite setup, or work tasks.

---

🛠️ Typical Specifications

Feature	Specification
LED Source	4 × LUMINUS SST-20 LEDs
Max Output	Up to ~4000 lumens
Beam Distance	~325 m
Battery	1 × 21700 (5000 mAh) rechargeable
Charging Port	USB-C (5 V/3 A)
Modes	9 (Moonlight to Turbo + Strobe/SOS/Beacon)
Waterproof Rating	IP68
Impact Resistance	~1 m drop tested
Material	Aluminum alloy
Weight	~79 g without battery

---

🧰 What’s Included

✔ HS41 headlamp body
✔ 21700 rechargeable battery
✔ Head strap
✔ USB-C charging cable
✔ User manual

---

🏕️ Typical Uses

Ideal for:

• Camping & hiking — powerful light for trails and campsites.

• Work/repair tasks — magnetic tail for hands-free work on metal surfaces.

• Search & emergency — long distance beam and SOS/Beacon modes.

• Everyday carry — detachable for handheld use.

Battery Type: LITHIUM ION

Brand Name: Sofirn

Certification: CCC,ce,FCC,ROHS,RoHS,FCC,CE,CCC

High-concerned chemical: None

Is Batteries Included: Yes

Item Type: Headlamps

Light Source: LED

Model Number: HS41

Model of LED Beads: SST20

Purpose: lighting

Switch Mode: High/Middle/Low

Waterproof: Yes