Comparison Console
Sofirn SF47T vs Sofirn SK31
EDC Flashlights comparison. Compare price, weight, specifications, materials, and real-world use case.
Command Brief
Recommended read
Sofirn SK31 stands out as the lightest option for weight, with about a 29% gap from the closest alternative. Sofirn SK31 stands out as the highest output option for max lumens, with about a 353% gap from the closest alternative. Sofirn SF47T stands out as the longest runtime option for max runtime, with about a 96% gap from the closest alternative.
Decision Signals
What stands out
Sofirn SK31 stands out as the lightest option for weight, with about a 29% gap from the closest alternative.
Sofirn SF47T stands out as the heaviest option for weight, with about a 41% gap from the closest alternative.
Sofirn SF47T stands out as the lowest output option for max lumens, with about a 78% gap from the closest alternative.
Sofirn SK31 stands out as the highest output option for max lumens, with about a 353% gap from the closest alternative.
Sofirn SK31 stands out as the shortest runtime option for max runtime, with about a 49% gap from the closest alternative.
Sofirn SF47T stands out as the longest runtime option for max runtime, with about a 96% gap from the closest alternative.
Sofirn SK31 stands out as the shortest option for length, with about a 37% gap from the closest alternative.
Sofirn SF47T stands out as the longest option for length, with about a 59% 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
Unknown
US$52.99
Weight
315 g (11.11 oz)Heaviest
223.3 g (7.88 oz)Lightest
Length
247.5 mm (9.74 in)Longest
156.1 mm (6.15 in)Shortest
Output
Max lumens
1500 lmLowest output
6800 lmHighest output
Max candela
150000 cd
Unknown
Beam distance
775 m (2543 ft)Highest
395 m (1296 ft)Lowest
Max runtime
58920 minLongest runtime
30000 minShortest runtime
Power & durability
Battery type
2x 21700 rechargeable lithium-ion
21700 Li-ion rechargeable
Charging type
Micro USB charger included (output 2x1A)
USB-C 5V 3A, approx. 3 hours charging time
Rechargeable
Yes
Yes
IP rating
IPX8 (up to 2m)
IPX8
Impact resistance
1 m (3 ft)
Unknown
Material
Aerospace grade 6061 aluminum alloy, hard-anodized Type III
Aluminum alloy body, stainless steel bezel with tungsten spheres
Use case profile
Best for
Long-range searchHuntingSearch and rescueSecurity patrols
Tactical useOutdoor useSearch and rescueLaw enforcementEDCHome defensePatrol duty
Common praise
Long throw performance with a tight, concentrated beamAdvanced thermal regulation for sustained outputGood build quality with aero grade aluminum and type III hard anodizingComes with complete kit including batteries and charger
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
Large size requiring two hands to operateNo full-length knurling on the tube for gripRequires button top batteries; flat top incompatibleSome dust found inside reflector in samplesSpot beam very tight, which may not be preferred by all users
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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