Comparison Console
Acebeam T37 vs Fenix TK20R V2.0
EDC Flashlights comparison. Compare price, weight, specifications, materials, and real-world use case.
Command Brief
Recommended read
Fenix TK20R V2.0 stands out as the lightest option for weight, with about a 9% gap from the closest alternative. Acebeam T37 stands out as the cheapest option for retail price. Acebeam T37 stands out as the highest output option for max lumens, with about a 33% gap from the closest alternative.
Decision Signals
What stands out
Acebeam T37 stands out as the cheapest option for retail price.
Fenix TK20R V2.0 stands out as the most expensive option for retail price.
Fenix TK20R V2.0 stands out as the lightest option for weight, with about a 9% gap from the closest alternative.
Acebeam T37 stands out as the heaviest option for weight, with about a 10% gap from the closest alternative.
Fenix TK20R V2.0 stands out as the lowest output option for max lumens, with about a 25% gap from the closest alternative.
Acebeam T37 stands out as the highest output option for max lumens, with about a 33% gap from the closest alternative.
Fenix TK20R V2.0 stands out as the shortest runtime option for max runtime, with about a 95% gap from the closest alternative.
Acebeam T37 stands out as the longest runtime option for max runtime, with about a 1795% 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$129.9Cheapest
US$129.95Most expensive
Weight
202 g (7.13 oz)Heaviest
184 g (6.49 oz)Lightest
Length
145.2 mm (5.72 in)Shortest
148 mm (5.83 in)Longest
Output
Max lumens
4000 lmHighest output
3000 lmLowest output
Max candela
48400 cdLowest candela
56400 cdHighest candela
Beam distance
440 m (1444 ft)Lowest
475 m (1558 ft)Highest
Max runtime
4320 minLongest runtime
228 minShortest runtime
Power & durability
Battery type
21700 rechargeable battery
1×21700 rechargeable lithium-ion battery (Fenix ARB-L21-5000 V2.0 included)
Charging type
USB Type-C
USB Type-C
Rechargeable
Yes
Yes
IP rating
IP68
IP68
Impact resistance
Unknown
2 m (7 ft)
Material
Black anodized aluminum
Aluminum (A6061-T6) with hard-anodized finish
Use case profile
Best for
Tactical useDuty useEDCSelf-defenseSearch and rescue
Tactical useLong-range throwEDCOutdoor explorationLaw enforcementSecuritySearch & Rescue
Common praise
High output with consistent brightnessTactile and easy-to-use rotary magnetic switchSolid build quality and durable anodized aluminum bodyLong runtime especially in Ultra Low mode (up to 72 hours)Convenient hidden USB-C charging portVersatile two-stage tail switchReplaceable battery
High output with excellent throw performanceDurable aluminum construction with waterproof ratingConvenient USB-C charging and included batteryGood ergonomic design and balanceHighly rated by customers with strong value for money
Common complaints
Relatively heavy at 202 grams for cap or lightweight carryRotary switch requires multiple turns to switch between certain modesHolster is stiff initially and tight fitting
Heavier and larger than compact EDC lightsNo electronic lockout feature requiring physical tailcap lock to prevent activationMay downshift in output after extended use due to thermal regulation