Comparison Console
Sofirn SC31B vs Sofirn SD15
EDC Flashlights comparison. Compare price, weight, specifications, materials, and real-world use case.
Command Brief
Recommended read
Sofirn SC31B stands out as the lightest option for weight, with about a 51% gap from the closest alternative. Sofirn SD15 stands out as the cheapest option for retail price, with about a 5% gap from the closest alternative. Sofirn SD15 stands out as the highest output option for max lumens, with about a 200% gap from the closest alternative.
Decision Signals
What stands out
Sofirn SD15 stands out as the cheapest option for retail price, with about a 5% gap from the closest alternative.
Sofirn SC31B stands out as the most expensive option for retail price, with about a 5% gap from the closest alternative.
Sofirn SC31B stands out as the lightest option for weight, with about a 51% gap from the closest alternative.
Sofirn SD15 stands out as the heaviest option for weight, with about a 103% gap from the closest alternative.
Sofirn SC31B stands out as the lowest output option for max lumens, with about a 67% gap from the closest alternative.
Sofirn SD15 stands out as the highest output option for max lumens, with about a 200% gap from the closest alternative.
Sofirn SD15 stands out as the shortest runtime option for max runtime, with about a 98% gap from the closest alternative.
Sofirn SC31B stands out as the longest runtime option for max runtime, with about a 4798% gap from the closest alternative.
Specification Profile
Relative dimensions at a glance
Each axis is normalized against the largest raw value among the products in this comparison. Farther outward means a larger value, not necessarily a better result. Axes with an unverified value are omitted.
Price & carry
Retail price
US$38.95Most expensive
US$36.99Cheapest
Weight
59 g (2.08 oz)Lightest
120 g (4.23 oz)Heaviest
Length
117.5 mm (4.63 in)Shortest
119 mm (4.69 in)Longest
Output
Max lumens
1000 lmLowest output
3000 lmHighest output
Max candela
10750 cdLowest candela
36225 cdHighest candela
Beam distance
207 m (679 ft)Lowest
381 m (1250 ft)Highest
Max runtime
4800 minLongest runtime
98 minShortest runtime
Power & durability
Battery type
18650 rechargeable lithium-ion
21700 lithium-ion
Charging type
Micro USB
External charger (single bay, micro-USB powered)
Rechargeable
Yes
Yes
IP rating
Unknown
IPX8
Impact resistance
Unknown
Unknown
Material
6061 Aluminum Alloy
Anodized aluminum
Use case profile
Best for
Everyday carry (EDC)Home useOutdoor activities such as camping, hiking, caving, dog walking, fishing
Diving useUnderwater explorationGeneral flashlight use
Common praise
Good value budget lightUSB charging includedStrong pocket clipSimple and easy user interfaceSolid build quality with anodised finish and gold plated springs
High output with good measured lumensSolid build quality with smooth anodizationEffective rotary dial interface with clear mode detentsIncludes wrist lanyard for retentionExternal charging with included 21700 charger and cable
Common complaints
No dedicated ultra-low moonlight modeMode memory can be inconvenient to access lowest modesClip is not reversible and protrudes beyond light lengthMicro USB instead of USB-C chargingNo lanyard included in some packages
Lack of grip texture on body and tailcapNo onboard chargingNo pouch, magnet, or pocket clip included
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