Comparison Console
Streamlight MegaStream USB vs SureFire M640DFT Turbo Scout Light Pro
EDC Flashlights comparison. Compare price, weight, specifications, materials, and real-world use case.
Command Brief
Recommended read
Streamlight MegaStream USB stands out as the lightest option for weight, with about a 2% gap from the closest alternative. Streamlight MegaStream USB stands out as the cheapest option for retail price, with about a 63% gap from the closest alternative. Streamlight MegaStream USB stands out as the highest output option for max lumens, with about a 157% gap from the closest alternative.
Decision Signals
What stands out
Streamlight MegaStream USB stands out as the cheapest option for retail price, with about a 63% gap from the closest alternative.
SureFire M640DFT Turbo Scout Light Pro stands out as the most expensive option for retail price, with about a 170% gap from the closest alternative.
Streamlight MegaStream USB stands out as the lightest option for weight, with about a 2% gap from the closest alternative.
SureFire M640DFT Turbo Scout Light Pro stands out as the heaviest option for weight, with about a 2% gap from the closest alternative.
SureFire M640DFT Turbo Scout Light Pro stands out as the lowest output option for max lumens, with about a 61% gap from the closest alternative.
Streamlight MegaStream USB stands out as the highest output option for max lumens, with about a 157% gap from the closest alternative.
SureFire M640DFT Turbo Scout Light Pro stands out as the shortest runtime option for max runtime, with about a 79% gap from the closest alternative.
Streamlight MegaStream USB stands out as the longest runtime option for max runtime, with about a 373% 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$148Cheapest
US$399Most expensive
Weight
153 g (5.40 oz)Lightest
156 g (5.50 oz)Heaviest
Length
134 mm (5.28 in)Shortest
150 mm (5.91 in)Longest
Output
Max lumens
1800 lmHighest output
700 lmLowest output
Max candela
26000 cdLowest candela
100000 cdHighest candela
Beam distance
322 m (1056 ft)Lowest
632 m (2073 ft)Highest
Max runtime
780 minLongest runtime
165 minShortest runtime
Power & durability
Battery type
SL-B34 rechargeable lithium-ion battery pack
One SF18650 rechargeable or two CR123A lithium primary batteries
Charging type
USB-C charging port accessible without removing the battery
Unknown
Rechargeable
Yes
Yes
IP rating
IPX7 waterproof to 1m for 30 minutes
IPX7
Impact resistance
2 m (7 ft)
Unknown
Material
Machined anodized aluminum alloy body with unbreakable polycarbonate lens
Aerospace aluminum, Mil-Spec hard anodized
Use case profile
Best for
Everyday carryOutdoor useHigh-lumen requirement
Long range target identificationWeapon mounting for military/law enforcement usePositive target identification at extreme distance
Common praise
Compact size with high outputSmooth and focused beamConvenient USB-C charging without battery removalDurable machined aluminum buildLong runtime on low settings
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 lithiumRugged aerospace aluminum construction with IPX7 waterproof ratingCompatible with multiple mounting systems and remote switches
Common complaints
Charging port cover prone to opening accidentallyPocket clip not securely attachedHigh output can be too bright for close work
Premium price pointLower lumen output compared to some flood lightsRechargeable battery sold only as SureFire formatDesigned primarily for long throw rather than wide area illuminationHeavier than compact Scout Light variants