Comparison Console
Fenix TK21R vs Nitecore SRT6i
EDC Flashlights comparison. Compare price, weight, specifications, materials, and real-world use case.
Command Brief
Recommended read
Nitecore SRT6i stands out as the lightest option for weight, with about a 25% gap from the closest alternative. Fenix TK21R stands out as the cheapest option for retail price, with about a 10% gap from the closest alternative. Fenix TK21R stands out as the highest output option for max lumens, with about a 71% gap from the closest alternative.
Decision Signals
What stands out
Fenix TK21R stands out as the cheapest option for retail price, with about a 10% gap from the closest alternative.
Nitecore SRT6i stands out as the most expensive option for retail price, with about a 12% gap from the closest alternative.
Nitecore SRT6i stands out as the lightest option for weight, with about a 25% gap from the closest alternative.
Fenix TK21R stands out as the heaviest option for weight, with about a 33% gap from the closest alternative.
Nitecore SRT6i stands out as the lowest output option for max lumens, with about a 42% gap from the closest alternative.
Fenix TK21R stands out as the highest output option for max lumens, with about a 71% gap from the closest alternative.
Nitecore SRT6i stands out as the shortest runtime option for max runtime, with about a 3% gap from the closest alternative.
Fenix TK21R stands out as the longest runtime option for max runtime, with about a 4% 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$145.49Most expensive
Weight
221.4 g (7.81 oz)Heaviest
167 g (5.89 oz)Lightest
Length
153.3 mm (6.04 in)Shortest
163 mm (6.42 in)Longest
Output
Max lumens
3600 lmHighest output
2100 lmLowest output
Max candela
Unknown
65200 cd
Beam distance
480 m (1575 ft)Lowest
510 m (1673 ft)Highest
Max runtime
4350 minLongest runtime
4200 minShortest runtime
Power & durability
Battery type
21700 lithium-ion
1x21700i Li-ion (NL2150HPi 5000mAh), 2xCR123, 2xRCR123/16340
Charging type
USB Type-C
USB Type-C
Rechargeable
Yes
Yes
IP rating
IP68
IP68
Impact resistance
1.5 m (5 ft)Lowest
2 m (7 ft)Highest
Material
Aluminum alloy A6061-T6
Aero grade aluminum alloy with HA III military grade hard-anodized finish; strike bezel with high strength silicon nitride ceramics
Use case profile
Best for
Tactical usePatrollingSearch and rescueTraffic inspectionSelf-defense
Tactical useLong range searchlightLaw enforcementHunting
Common praise
Very bright with strong beamSolid build qualityIP68 waterproof ratingLong runtimeFast USB-C chargingComfortable size for tactical useImproved tactile switch feel
Intuitive no-nonsense user interface with rotary selector ringImpressive long throw and beam intensitySolid build quality with durable materialsIntegrated USB-C charging with included proprietary batteryTactical features such as strobe ready mode and lockout
Common complaints
Larger size compared to some EDC flashlightsNo detailed mode descriptions available
Large head size makes pocket carry inconvenientRequires proprietary battery which limits standard battery use
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