Comparison Console
Sofirn SK31 vs Wuben A21
EDC Flashlights comparison. Compare price, weight, specifications, materials, and real-world use case.
Command Brief
Recommended read
Wuben A21 stands out as the lightest option for weight, with about a 3% gap from the closest alternative. Sofirn SK31 stands out as the highest output option for max lumens, with about a 62% gap from the closest alternative. Sofirn SK31 stands out as the longest runtime option for max runtime, with about a 16567% gap from the closest alternative.
Decision Signals
What stands out
Wuben A21 stands out as the lightest option for weight, with about a 3% gap from the closest alternative.
Sofirn SK31 stands out as the heaviest option for weight, with about a 3% gap from the closest alternative.
Wuben A21 stands out as the lowest output option for max lumens, with about a 38% gap from the closest alternative.
Sofirn SK31 stands out as the highest output option for max lumens, with about a 62% gap from the closest alternative.
Wuben A21 stands out as the shortest runtime option for max runtime, with about a 99% gap from the closest alternative.
Sofirn SK31 stands out as the longest runtime option for max runtime, with about a 16567% gap from the closest alternative.
Wuben A21 stands out as the shortest option for length, with about a 14% gap from the closest alternative.
Sofirn SK31 stands out as the longest option for length, with about a 16% 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$52.99
Unknown
Weight
223.3 g (7.88 oz)Heaviest
217 g (7.65 oz)Lightest
Length
156.1 mm (6.15 in)Longest
135 mm (5.31 in)Shortest
Output
Max lumens
6800 lmHighest output
4200 lmLowest output
Max candela
Unknown
12854 cd
Beam distance
395 m (1296 ft)Highest
222 m (728 ft)Lowest
Max runtime
30000 minLongest runtime
180 minShortest runtime
Power & durability
Battery type
21700 Li-ion rechargeable
1x 21700 lithium-ion
Charging type
USB-C 5V 3A, approx. 3 hours charging time
USB-C (up to 2A)
Rechargeable
Yes
Yes
IP rating
IPX8
IPX8
Impact resistance
Unknown
Unknown
Material
Aluminum alloy body, stainless steel bezel with tungsten spheres
Aluminum body, stainless steel bezel
Use case profile
Best for
Tactical useOutdoor useSearch and rescueLaw enforcementEDCHome defensePatrol duty
EDC useHigh output flood lightingDurability
Common praise
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
High quality build and materialsImpressive output close to rated 4200 lumensHigh beam intensity and wide flood beamDurable stainless steel bezelConvenient USB-C charging with included batteryGood mode memory and lock-out features
Common complaints
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
Tailcap difficult to unscrewParasitic drain causing slow battery dischargeSound of metal parts during high heat runtimeLong battery does not fit most chargers
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