Comparison Console
SureFire M640DFT Turbo Scout Light Pro vs SureFire X400 Ultra
EDC Flashlights comparison. Compare price, weight, specifications, materials, and real-world use case.
Command Brief
Recommended read
SureFire X400 Ultra stands out as the lightest option for weight, with about a 9% gap from the closest alternative. SureFire M640DFT Turbo Scout Light Pro stands out as the cheapest option for retail price, with about a 50% gap from the closest alternative. SureFire X400 Ultra stands out as the highest output option for max lumens, with about a 43% gap from the closest alternative.
Decision Signals
What stands out
SureFire M640DFT Turbo Scout Light Pro stands out as the cheapest option for retail price, with about a 50% gap from the closest alternative.
SureFire X400 Ultra stands out as the most expensive option for retail price, with about a 100% gap from the closest alternative.
SureFire X400 Ultra stands out as the lightest option for weight, with about a 9% gap from the closest alternative.
SureFire M640DFT Turbo Scout Light Pro stands out as the heaviest option for weight, with about a 10% gap from the closest alternative.
SureFire M640DFT Turbo Scout Light Pro stands out as the lowest output option for max lumens, with about a 30% gap from the closest alternative.
SureFire X400 Ultra stands out as the highest output option for max lumens, with about a 43% gap from the closest alternative.
SureFire X400 Ultra stands out as the shortest runtime option for max runtime, with about a 55% gap from the closest alternative.
SureFire M640DFT Turbo Scout Light Pro stands out as the longest runtime option for max runtime, with about a 120% 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$399Cheapest
US$799Most expensive
Weight
156 g (5.50 oz)Heaviest
142 g (5.01 oz)Lightest
Length
150 mm (5.91 in)Longest
94 mm (3.70 in)Shortest
Output
Max lumens
700 lmLowest output
1000 lmHighest output
Max candela
100000 cdHighest candela
11300 cdLowest candela
Beam distance
632 m (2073 ft)Highest
213 m (699 ft)Lowest
Max runtime
165 minLongest runtime
75 minShortest runtime
Power & durability
Battery type
One SF18650 rechargeable or two CR123A lithium primary batteries
2 x CR123A
Charging type
Unknown
Unknown
Rechargeable
Yes
Unknown
IP rating
IPX7
IPX4
Impact resistance
Unknown
Unknown
Material
Aerospace aluminum, Mil-Spec hard anodized
Mil-Spec hard-anodized aerospace aluminum
Use case profile
Best for
Long range target identificationWeapon mounting for military/law enforcement usePositive target identification at extreme distance
Weapon-mounted tactical illumination and aimingLaw enforcementMilitaryHome defenseSelf-defense applications
Common praise
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
High output 1000 lumens with smooth hybrid beam profileHighly visible laser (red or green) that rarely needs re-zeroingDurable Mil-Spec hard-anodized aluminum constructionAmbidextrous, intuitive switchingReliable zero retention and rugged design
Common complaints
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
High retail priceLaser brightness might not be intense enough for some usersActivation switch could feel less tactileSome bulkiness for concealed carry