Comparison Console
Sofirn SK31 vs ThruNite TT20
EDC Flashlights comparison. Compare price, weight, specifications, materials, and real-world use case.
Command Brief
Recommended read
ThruNite TT20 stands out as the lightest option for weight, with about a 19% gap from the closest alternative. Sofirn SK31 stands out as the cheapest option for retail price, with about a 12% gap from the closest alternative. Sofirn SK31 stands out as the highest output option for max lumens, with about a 169% gap from the closest alternative.
Decision Signals
What stands out
Sofirn SK31 stands out as the cheapest option for retail price, with about a 12% gap from the closest alternative.
ThruNite TT20 stands out as the most expensive option for retail price, with about a 13% gap from the closest alternative.
ThruNite TT20 stands out as the lightest option for weight, with about a 19% gap from the closest alternative.
Sofirn SK31 stands out as the heaviest option for weight, with about a 23% gap from the closest alternative.
ThruNite TT20 stands out as the lowest output option for max lumens, with about a 63% gap from the closest alternative.
Sofirn SK31 stands out as the highest output option for max lumens, with about a 169% gap from the closest alternative.
Sofirn SK31 stands out as the shortest runtime option for max runtime, with about a 79% gap from the closest alternative.
ThruNite TT20 stands out as the longest runtime option for max runtime, with about a 380% 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$52.99Cheapest
US$59.95Most expensive
Weight
223.3 g (7.88 oz)Heaviest
181.1 g (6.39 oz)Lightest
Length
156.1 mm (6.15 in)Longest
136 mm (5.35 in)Shortest
Output
Max lumens
6800 lmHighest output
2526 lmLowest output
Max candela
Unknown
26600 cd
Beam distance
395 m (1296 ft)Highest
305 m (1001 ft)Lowest
Max runtime
30000 minShortest runtime
144000 minLongest runtime
Power & durability
Battery type
21700 Li-ion rechargeable
21700 proprietary lithium-ion
Charging type
USB-C 5V 3A, approx. 3 hours charging time
USB Type-C
Rechargeable
Yes
Yes
IP rating
IPX8
IPX8
Impact resistance
Unknown
1.5 m (5 ft)
Material
Aluminum alloy body, stainless steel bezel with tungsten spheres
Aluminum 6061-T6
Use case profile
Best for
Tactical useOutdoor useSearch and rescueLaw enforcementEDCHome defensePatrol duty
Tactical useHuntingSearch and rescueSecurity patrolRoadside emergenciesOutdoor adventuresEmergency preparedness
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 brightness and long throwGood build quality and ruggednessVersatile and intuitive interfaceLong battery life especially in firefly modeProprietary battery includedUSB-C chargingVersatile carrying options including reversible clip and holster
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
Proprietary battery limits battery replacement optionsSome users find the size and weight bulky for pocket carry
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