Sofirn/Keychain

Sofirn SC01

Name: Sofirn SC01
Brand: Sofirn
Price: 10 USD
Availability: InStock

Bare-bones budget keychain light. The SC01 is almost free and surprisingly capable on a single AAA. Toss one in every bag you own.

Beam profile

Balanced, about 28° wide. A usable hotspot with enough spill to see around it.

Estimated from 330 lm ÷ 1,800 cd — how this works

$10

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Specifications

Output: 330lm
Peak intensity: 1800cd
Beam distance: 85m
Emitter: SST-20 5000K
Colour rendering: 70 CRI
Beam type: Balanced
Cell: AAA
Runtime: 30 min (high)
Modes: 3 Stepped
Interface: Simple
Water/dust: IPX8
Dimensions: 2.8 x 0.6 in
Weight: 0.6 oz
Warranty: 1 Year

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

Features

Pocket Clip Waterproof (IP67+)

What owners report

Sofirn SC01/3 sources reviewed

A stainless steel keychain light around an SST-20 at 95+ CRI, and reviewers rate the beam quality and build as far above what the price and size suggest — it feels very well made, and the 10-lumen primary mode gives a better beam with more reach than any phone flashlight, which is the realistic competition for a light this size. The 330-lumen top mode is excellent for the format.

The practicalities: the top mode only lasts around five minutes, as any 10180-cell light's must, and the tiny 10180 battery isn't included with some listings — check before ordering, because it's not a cell most people have. Charging is micro-USB rather than USB-C, showing the design's age. Note the general caveat that Sofirn's direct customer service draws mixed reports, so buying through a marketplace with returns is the safer route.

Consistently praised

95+ CRI beam that embarrasses the phone flashlight it replaces
Stainless steel build that feels far better than the price
330-lumen top mode — excellent for a keychain light
The 10-lumen primary mode has genuinely useful reach
Small enough to live unnoticed on keys

Common complaints

The 10180 cell isn't included with some listings
The top mode lasts only around five minutes
Micro-USB charging rather than USB-C
10180 cells are obscure if you ever need a spare
Mixed reports on Sofirn's direct customer service

Questions people ask

Does it come with a battery?: Not always — some listings ship without the 10180 cell. Check before ordering, because it's an obscure size you won't have lying around.
How long does it run?: Around five minutes at 330 lumens, much longer at the 10-lumen primary mode. Keychain lights are burst tools — judge it against a phone flashlight, not a torch.
Why high CRI on something this small?: Because a keychain light is used at arm's length, exactly where colour rendering shows. It's the main thing separating this from generic keyring lights.
Is stainless steel worth it?: On a keyring, yes — it shrugs off the constant scratching from keys that chews through anodised aluminium.

Sources (3)