Comparison Console
Sofirn IF25A vs Sofirn SK31
EDC Flashlights comparison. Compare price, weight, specifications, materials, and real-world use case.
Command Brief
Recommended read
Sofirn IF25A stands out as the lightest option for weight, with about a 26% gap from the closest alternative. Sofirn IF25A stands out as the cheapest option for retail price, with about a 36% gap from the closest alternative. Sofirn SK31 stands out as the highest output option for max lumens, with about a 79% gap from the closest alternative.
Decision Signals
What stands out
Sofirn IF25A stands out as the cheapest option for retail price, with about a 36% gap from the closest alternative.
Sofirn SK31 stands out as the most expensive option for retail price, with about a 56% gap from the closest alternative.
Sofirn IF25A stands out as the lightest option for weight, with about a 26% gap from the closest alternative.
Sofirn SK31 stands out as the heaviest option for weight, with about a 35% gap from the closest alternative.
Sofirn IF25A stands out as the lowest output option for max lumens, with about a 44% gap from the closest alternative.
Sofirn SK31 stands out as the highest output option for max lumens, with about a 79% gap from the closest alternative.
Sofirn IF25A stands out as the shortest option for length, with about a 32% gap from the closest alternative.
Sofirn SK31 stands out as the longest option for length, with about a 47% 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$34Cheapest
US$52.99Most expensive
Weight
165 g (5.82 oz)Lightest
223.3 g (7.88 oz)Heaviest
Length
106.4 mm (4.19 in)Shortest
156.1 mm (6.15 in)Longest
Output
Max lumens
3800 lmLowest output
6800 lmHighest output
Max candela
Unknown
Unknown
Beam distance
420 m (1378 ft)Highest
395 m (1296 ft)Lowest
Max runtime
Unknown
30000 min
Power & durability
Battery type
1x 21700 Li-ion
21700 Li-ion rechargeable
Charging type
USB-C charging port (A-to-C cable required)
USB-C 5V 3A, approx. 3 hours charging time
Rechargeable
Yes
Yes
IP rating
IPX8 (submersible up to 2m for 30 minutes)
IPX8
Impact resistance
Unknown
Unknown
Material
6061 aluminum alloy, hard-anodized, aircraft-grade aluminum
Aluminum alloy body, stainless steel bezel with tungsten spheres
Use case profile
Best for
EDC use with high brightness and compact sizeCamping and outdoor use requiring wide flood beamUsers needing USB-C rechargeable flashlight
Tactical useOutdoor useSearch and rescueLaw enforcementEDCHome defensePatrol duty
Common praise
High maximum output (3800 lumens) with good beam profileCompact and lightweight for a 21700 lightSmooth brightness control with Anduril UIGood build quality with aircraft-grade aluminumBuilt-in USB-C charging port
High max output of 6800 lumensLong beam distance (395 meters)Robust aluminum body with stainless steel bezel and tungsten spheres for glass breakingEfficient LHP73B LED emitter with clean tintTriple-switch interface allowing intuitive controlExcellent water resistance with screwable aluminum USB-C coverLong runtime up to 500 hours on low modeIncluded rechargeable 21700 batteryBattery indicator for charge level
Common complaints
No pocket clip included, reducing ease of carryBezel and lanyard hole have some sharp edgesSome complexity in the Anduril user interface for advanced featuresHeats up quickly on turbo mode limiting runtimeThe rubber port cover reduces waterproofness if not properly sealed
Lockout switch placement can be awkwardLockout switch sometimes malfunctions causing failure to turn on (resolvable by toggling lockout)Included battery has lower continuous discharge rating (CDR) than recommended for max turbo output
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