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Nitecore SRT6i vs SureFire M640DFT Turbo Scout Light Pro

EDC Flashlights comparison. Compare price, weight, specifications, materials, and real-world use case.

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Command Brief

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SureFire M640DFT Turbo Scout Light Pro stands out as the lightest option for weight, with about a 7% gap from the closest alternative. Nitecore SRT6i stands out as the cheapest option for retail price, with about a 64% gap from the closest alternative. Nitecore SRT6i stands out as the highest output option for max lumens, with about a 200% gap from the closest alternative.

Decision Signals

What stands out

Cheapest

Nitecore SRT6i stands out as the cheapest option for retail price, with about a 64% gap from the closest alternative.

Most expensive

SureFire M640DFT Turbo Scout Light Pro stands out as the most expensive option for retail price, with about a 174% gap from the closest alternative.

Lightest

SureFire M640DFT Turbo Scout Light Pro stands out as the lightest option for weight, with about a 7% gap from the closest alternative.

Heaviest

Nitecore SRT6i stands out as the heaviest option for weight, with about a 7% gap from the closest alternative.

Lowest output

SureFire M640DFT Turbo Scout Light Pro stands out as the lowest output option for max lumens, with about a 67% gap from the closest alternative.

Highest output

Nitecore SRT6i stands out as the highest output option for max lumens, with about a 200% gap from the closest alternative.

Shortest runtime

SureFire M640DFT Turbo Scout Light Pro stands out as the shortest runtime option for max runtime, with about a 96% gap from the closest alternative.

Longest runtime

Nitecore SRT6i stands out as the longest runtime option for max runtime, with about a 2445% 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.

Nitecore SRT6i — Beam distance: 510 m (1673 ft)Nitecore SRT6i — Max candela: 65200 cdNitecore SRT6i — Weight: 167 g (5.89 oz)Nitecore SRT6i — Length: 163 mm (6.42 in)Nitecore SRT6i — Retail price: US$145.49Nitecore SRT6i — Max lumens: 2100 lmSureFire M640DFT Turbo Scout Light Pro — Beam distance: 632 m (2073 ft)SureFire M640DFT Turbo Scout Light Pro — Max candela: 100000 cdSureFire M640DFT Turbo Scout Light Pro — Weight: 156 g (5.50 oz)SureFire M640DFT Turbo Scout Light Pro — Length: 150 mm (5.91 in)SureFire M640DFT Turbo Scout Light Pro — Retail price: US$399SureFire M640DFT Turbo Scout Light Pro — Max lumens: 700 lmBeam distanceMax candelaWeightLengthRetail priceMax lumens
Specification
Nitecore SRT6i
SureFire M640DFT Turbo Scout Light Pro
Price & carry
Retail price
US$145.49Cheapest
US$399Most expensive
Weight
167 g (5.89 oz)Heaviest
156 g (5.50 oz)Lightest
Length
163 mm (6.42 in)Longest
150 mm (5.91 in)Shortest
Output
Max lumens
2100 lmHighest output
700 lmLowest output
Max candela
65200 cdLowest candela
100000 cdHighest candela
Beam distance
510 m (1673 ft)Lowest
632 m (2073 ft)Highest
Max runtime
4200 minLongest runtime
165 minShortest runtime
Power & durability
Battery type
1x21700i Li-ion (NL2150HPi 5000mAh), 2xCR123, 2xRCR123/16340
One SF18650 rechargeable or two CR123A lithium primary batteries
Charging type
USB Type-C
Unknown
Rechargeable
Yes
Yes
IP rating
IP68
IPX7
Impact resistance
2 m (7 ft)
Unknown
Material
Aero grade aluminum alloy with HA III military grade hard-anodized finish; strike bezel with high strength silicon nitride ceramics
Aerospace aluminum, Mil-Spec hard anodized
Use case profile
Best for
▣Tactical use▣Long range searchlight▣Law enforcement▣Hunting
▣Long range target identification▣Weapon mounting for military/law enforcement use▣Positive target identification at extreme distance
Common praise
✓Intuitive no-nonsense user interface with rotary selector ring✓Impressive long throw and beam intensity✓Solid build quality with durable materials✓Integrated USB-C charging with included proprietary battery✓Tactical features such as strobe ready mode and lockout
✓Outstanding beam intensity for long range identification (100,000 candela)✓Long runtime for its class (2.5-2.75 hours)✓Dual fuel capability offers flexibility between rechargeable battery and primary lithium✓Rugged aerospace aluminum construction with IPX7 waterproof rating✓Compatible with multiple mounting systems and remote switches
Common complaints
⚠Large head size makes pocket carry inconvenient⚠Requires proprietary battery which limits standard battery use
⚠Premium price point⚠Lower lumen output compared to some flood lights⚠Rechargeable battery sold only as SureFire format⚠Designed primarily for long throw rather than wide area illumination⚠Heavier than compact Scout Light variants
Similar Records

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Comparison Paths

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