Sofirn/Lantern

Sofirn LT1S

Name: Sofirn LT1S
Brand: Sofirn
Price: 41 USD
Availability: InStock

The smaller sibling of the LT1. The LT1S uses a single 21700 for a more compact lantern that still has Anduril 2 with CCT mixing. Perfect for the ultralight camper.

Beam profile

Flood, about 60° wide. Wide and even — light where you are, not where you're pointing.

Estimated from 500 lm ÷ 600 cd — how this works

$41

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Specifications

Output: 500lm
Peak intensity: 600cd
Beam distance: 49m
Emitter: Samsung LH351D (mixed CCT)
Colour rendering: 95 CRI
Beam type: Flood
Cell: 21700
Runtime: 5 hrs (medium)
Modes: Ramping
Interface: Anduril 2
Water/dust: IPX8
Dimensions: 4.8 x 1.8 in
Weight: 4.5 oz
Warranty: 1 Year

Manufacturer figures, measured to ANSI FL1 where the brand states it.

Features

High CRI (90+)Anduril UI USB-C Charging Magnetic Tailcap Waterproof (IP67+)

What owners report

Sofirn LT1S/4 sources reviewed

The LT1S is the packable version of the LT1: an accordion-style silicone body that collapses flat into a disc, running on a single cell, still with the warm-to-cool colour mixing that makes the family worth owning. Reviewers describe it as a rare lantern that balances brightness, battery life and packability rather than sacrificing one.

The contentious change is the interface. Sofirn dropped Anduril for an in-house UI, and enthusiasts consider that a downgrade from the thing that made the original great — one forum review of the later Pro variant is titled "the disappointment of the year". Two practical omissions: there's no built-in hanging hook, so most owners clip a small carabiner to it, and the IPX4 rating means it handles rain but not a soaking.

Consistently praised

Collapses flat into a disc — genuinely packable for backpacking
Keeps the warm-to-cool colour temperature mixing
Runs on a single cell rather than four
Good build quality with even anodising and no sharp edges
Balances brightness, runtime and pack size better than most lanterns

Common complaints

Dropped Anduril for a Sofirn-designed interface, which enthusiasts consider a downgrade
No built-in hanging hook — you'll want to add a carabiner
IPX4 only: fine in rain, not for kayak camping or a real soaking
Single cell means much shorter runtime than the four-cell LT1
The later Pro variant was poorly received

Questions people ask

Is losing Anduril a big deal?: It depends what you wanted. Basic operation and colour mixing still work fine. What you lose is the deep configurability — ramp floor, thermal ceiling, custom mode groups — that made the original LT1 an enthusiast favourite.
How do you hang it?: There's no integrated hook, which is an odd omission on a tent lantern. Owners clip a small carabiner through the bail. Worth buying one at the same time.
Is IPX4 enough for camping?: For rain, yes. It isn't rated for submersion or sustained heavy water, so it's not the right choice for paddling trips or genuinely wet conditions.
LT1S or LT1?: LT1S if pack size matters most; LT1 if you want Anduril and the far longer four-cell runtime. They're the same idea at two different sizes.

Sources (4)