Comparison Console
Fenix TK21R vs Sofirn ST2
EDC Flashlights comparison. Compare price, weight, specifications, materials, and real-world use case.
Command Brief
Recommended read
Fenix TK21R stands out as the lightest option for weight, with about a 11% gap from the closest alternative. Sofirn ST2 stands out as the cheapest option for retail price, with about a 52% gap from the closest alternative. Fenix TK21R stands out as the highest output option for max lumens, with about a 20% gap from the closest alternative.
Decision Signals
What stands out
Sofirn ST2 stands out as the cheapest option for retail price, with about a 52% gap from the closest alternative.
Fenix TK21R stands out as the most expensive option for retail price, with about a 107% gap from the closest alternative.
Fenix TK21R stands out as the lightest option for weight, with about a 11% gap from the closest alternative.
Sofirn ST2 stands out as the heaviest option for weight, with about a 12% gap from the closest alternative.
Sofirn ST2 stands out as the lowest output option for max lumens, with about a 17% gap from the closest alternative.
Fenix TK21R stands out as the highest output option for max lumens, with about a 20% gap from the closest alternative.
Fenix TK21R stands out as the shortest runtime option for max runtime, with about a 83% gap from the closest alternative.
Sofirn ST2 stands out as the longest runtime option for max runtime, with about a 493% 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$130.43Most expensive
US$62.99Cheapest
Weight
221.4 g (7.81 oz)Lightest
247.6 g (8.73 oz)Heaviest
Length
153.3 mm (6.04 in)Longest
112 mm (4.41 in)Shortest
Output
Max lumens
3600 lmHighest output
3000 lmLowest output
Max candela
Unknown
Unknown
Beam distance
480 m (1575 ft)
Unknown
Max runtime
4350 minShortest runtime
25800 minLongest runtime
Power & durability
Battery type
21700 lithium-ion
2x 18650 rechargeable lithium-ion cells (included)
Charging type
USB Type-C
USB Type-C
Rechargeable
Yes
Yes
IP rating
IP68
IPX6
Impact resistance
1.5 m (5 ft)
Unknown
Material
Aluminum alloy A6061-T6
Aluminum alloy
Use case profile
Best for
Tactical usePatrollingSearch and rescueTraffic inspectionSelf-defense
WorkOutdoor activitiesGaragesJob sitesEveryday carry
Common praise
Very bright with strong beamSolid build qualityIP68 waterproof ratingLong runtimeFast USB-C chargingComfortable size for tactical useImproved tactile switch feel
High maximum brightness of 3000 lumens with smooth dimmingVersatile multi-light colors: white, red, and UVRobust 90º rotating head with good resistance and soft clicksStrong magnetic tail and large clip for easy hands-free useLong runtime up to ~430 hours on lowUSB-C charging with included cableSolid aluminum alloy construction with IPX6 water resistance
Common complaints
Larger size compared to some EDC flashlightsNo detailed mode descriptions available
Output steps down quickly from turbo to about 500 lumens after 1 minuteRelatively heavy and bulky for EDC (about 248 grams, 4.4 x 1.8 x 0.9 inches)Some users may find the UI or rotary switch unusual at first
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