Comparison Console
Fenix TK21R vs Nitecore TM12K
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 5% gap from the closest alternative. Fenix TK21R stands out as the cheapest option for retail price, with about a 28% gap from the closest alternative. Nitecore TM12K stands out as the highest output option for max lumens, with about a 233% gap from the closest alternative.
Decision Signals
What stands out
Fenix TK21R stands out as the cheapest option for retail price, with about a 28% gap from the closest alternative.
Nitecore TM12K stands out as the most expensive option for retail price, with about a 38% gap from the closest alternative.
Fenix TK21R stands out as the lightest option for weight, with about a 5% gap from the closest alternative.
Nitecore TM12K stands out as the heaviest option for weight, with about a 5% gap from the closest alternative.
Fenix TK21R stands out as the lowest output option for max lumens, with about a 70% gap from the closest alternative.
Nitecore TM12K stands out as the highest output option for max lumens, with about a 233% gap from the closest alternative.
Fenix TK21R stands out as the shortest runtime option for max runtime, with about a 64% gap from the closest alternative.
Nitecore TM12K stands out as the longest runtime option for max runtime, with about a 176% 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$130.43Cheapest
US$180Most expensive
Weight
221.4 g (7.81 oz)Lightest
233 g (8.22 oz)Heaviest
Length
153.3 mm (6.04 in)Longest
110 mm (4.33 in)Shortest
Output
Max lumens
3600 lmLowest output
12000 lmHighest output
Max candela
Unknown
18000 cd
Beam distance
480 m (1575 ft)Highest
268 m (879 ft)Lowest
Max runtime
4350 minShortest runtime
12000 minLongest runtime
Power & durability
Battery type
21700 lithium-ion
Built-in rechargeable 21700 Li-ion battery 4800mAh
Charging type
USB Type-C
USB-C with QC 3.0 and QC 2.0 support
Rechargeable
Yes
Yes
IP rating
IP68
IP54
Impact resistance
1.5 m (5 ft)Highest
1 m (3 ft)Lowest
Material
Aluminum alloy A6061-T6
Aerospace-grade aluminum alloy with HA III hard-anodized black matte finish, stainless steel bezel
Use case profile
Best for
Tactical usePatrollingSearch and rescueTraffic inspectionSelf-defense
Tactical & Law EnforcementUtility & Infrastructure WorkPreparedness & Emergency Kits
Common praise
Very bright with strong beamSolid build qualityIP68 waterproof ratingLong runtimeFast USB-C chargingComfortable size for tactical useImproved tactile switch feel
Very high output brightness and beam distance for sizeCompact and lightweight designDurable aerospace-grade aluminum body with hard anodized finishFast USB-C charging with QC supportCustomizable high mode and OLED real-time display
Common complaints
Larger size compared to some EDC flashlightsNo detailed mode descriptions available
Turbo mode limited to 6-7 seconds to prevent overheatingBeam distance is moderate for the lumen output due to flood-style beamBattery built-in, not user-replaceable
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