Comparison Console
Nitecore SRT6i vs Nitecore TM39
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 88% gap from the closest alternative. Nitecore SRT6i stands out as the cheapest option for retail price, with about a 71% gap from the closest alternative. Nitecore TM39 stands out as the highest output option for max lumens, with about a 148% gap from the closest alternative.
Decision Signals
What stands out
Nitecore SRT6i stands out as the cheapest option for retail price, with about a 71% gap from the closest alternative.
Nitecore TM39 stands out as the most expensive option for retail price, with about a 244% gap from the closest alternative.
Nitecore SRT6i stands out as the lightest option for weight, with about a 88% gap from the closest alternative.
Nitecore TM39 stands out as the heaviest option for weight, with about a 715% gap from the closest alternative.
Nitecore SRT6i stands out as the lowest output option for max lumens, with about a 60% gap from the closest alternative.
Nitecore TM39 stands out as the highest output option for max lumens, with about a 148% gap from the closest alternative.
Nitecore TM39 stands out as the shortest runtime option for max runtime, with about a 49% gap from the closest alternative.
Nitecore SRT6i stands out as the longest runtime option for max runtime, with about a 94% 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$145.49Cheapest
US$499.95Most expensive
Weight
167 g (5.89 oz)Lightest
1361 g (48.01 oz)Heaviest
Length
163 mm (6.42 in)Shortest
276 mm (10.87 in)Longest
Output
Max lumens
2100 lmLowest output
5200 lmHighest output
Max candela
65200 cdLowest candela
562500 cdHighest candela
Beam distance
510 m (1673 ft)Lowest
1500 m (4921 ft)Highest
Max runtime
4200 minLongest runtime
2160 minShortest runtime
Power & durability
Battery type
1x21700i Li-ion (NL2150HPi 5000mAh), 2xCR123, 2xRCR123/16340
NBP68 HD rechargeable battery pack (98Wh, 3400mAh x8, 3.7V)
Charging type
USB Type-C
Built-in charging port via AC adapter (3.5mm)
Rechargeable
Yes
Yes
IP rating
IP68
IP68 (up to 2m submersible)
Impact resistance
2 m (7 ft)Highest
1 m (3 ft)Lowest
Material
Aero grade aluminum alloy with HA III military grade hard-anodized finish; strike bezel with high strength silicon nitride ceramics
Aviation grade aluminum alloy with Military grade HA III hard anodized finish
Use case profile
Best for
Tactical useLong range searchlightLaw enforcementHunting
Search and rescueHuntingExplorationLong-range illumination
Common praise
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
Extremely powerful beam with impressive long throwDurable build with waterproof and impact resistanceUser-friendly double-button interface with OLED displayLong runtime on lower modes with included large battery pack
Common complaints
Large head size makes pocket carry inconvenientRequires proprietary battery which limits standard battery use
Large size and weight limits portability for everyday carryHigher brightness modes have shorter runtimePremium price point
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