Comparison Console
Fenix TK21R vs Nitecore EDC37
EDC Flashlights comparison. Compare price, weight, specifications, materials, and real-world use case.
Command Brief
Recommended read
Nitecore EDC37 stands out as the lightest option for weight, with about a 10% gap from the closest alternative. Fenix TK21R stands out as the cheapest option for retail price, with about a 7% gap from the closest alternative. Nitecore EDC37 stands out as the highest output option for max lumens, with about a 122% gap from the closest alternative.
Decision Signals
What stands out
Fenix TK21R stands out as the cheapest option for retail price, with about a 7% gap from the closest alternative.
Nitecore EDC37 stands out as the most expensive option for retail price, with about a 7% gap from the closest alternative.
Nitecore EDC37 stands out as the lightest option for weight, with about a 10% gap from the closest alternative.
Fenix TK21R stands out as the heaviest option for weight, with about a 11% gap from the closest alternative.
Fenix TK21R stands out as the lowest output option for max lumens, with about a 55% gap from the closest alternative.
Nitecore EDC37 stands out as the highest output option for max lumens, with about a 122% gap from the closest alternative.
Fenix TK21R stands out as the shortest runtime option for max runtime, with about a 62% gap from the closest alternative.
Nitecore EDC37 stands out as the longest runtime option for max runtime, with about a 162% 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$140Most expensive
Weight
221.4 g (7.81 oz)Heaviest
199 g (7.02 oz)Lightest
Length
153.3 mm (6.04 in)Longest
108 mm (4.25 in)Shortest
Output
Max lumens
3600 lmLowest output
8000 lmHighest output
Max candela
Unknown
44010 cd
Beam distance
480 m (1575 ft)Highest
420 m (1378 ft)Lowest
Max runtime
4350 minShortest runtime
11400 minLongest runtime
Power & durability
Battery type
21700 lithium-ion
Built-in Li-ion battery
Charging type
USB Type-C
USB-C fast charging (18W)
Rechargeable
Yes
Yes
IP rating
IP68
IP54
Impact resistance
1.5 m (5 ft)Lowest
2 m (7 ft)Highest
Material
Aluminum alloy A6061-T6
Stainless steel with PVD coating and carbon fiber reinforced polymer frame with aluminum heat dissipation plate
Use case profile
Best for
Tactical UsePatrollingSearch And RescueTraffic InspectionSelf Defense
Tactical EDCSecurity PatrolLaw EnforcementSearch And RescuePersonal DefenseEmergency Lighting
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 For Compact SizeUseful Oled Real Time Display With Mode, Brightness, Battery And Runtime InfoPhysical Lockout Switch Prevents Accidental ActivationGood Output Regulation With Temperature ManagementSolid Build Quality With Tactical DesignFast USB C Charging With Large Built In BatteryMultiple Usable Modes Including Flood And Spotlight
Common complaints
Larger Size Compared To Some EDC FlashlightsNo Detailed Mode Descriptions Available
Ip54 Rating Lower Than Typical Ip67/ip68 For Full Waterproof UseBattery Is Not User ReplaceableMomentary High Output Duration Limited By Thermal Regulation
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