Comparison Console
Acebeam D30 vs Streamlight Knucklehead Spot
EDC Flashlights comparison. Compare price, weight, specifications, materials, and real-world use case.
Command Brief
Recommended read
Acebeam D30 stands out as the lightest option for weight, with about a 21% gap from the closest alternative. Streamlight Knucklehead Spot stands out as the cheapest option for retail price, with about a 12% gap from the closest alternative. Acebeam D30 stands out as the highest output option for max lumens, with about a 3011% gap from the closest alternative.
Decision Signals
What stands out
Streamlight Knucklehead Spot stands out as the cheapest option for retail price, with about a 12% gap from the closest alternative.
Acebeam D30 stands out as the most expensive option for retail price, with about a 14% gap from the closest alternative.
Acebeam D30 stands out as the lightest option for weight, with about a 21% gap from the closest alternative.
Streamlight Knucklehead Spot stands out as the heaviest option for weight, with about a 27% gap from the closest alternative.
Streamlight Knucklehead Spot stands out as the lowest output option for max lumens, with about a 97% gap from the closest alternative.
Acebeam D30 stands out as the highest output option for max lumens, with about a 3011% gap from the closest alternative.
Acebeam D30 stands out as the shortest runtime option for max runtime, with about a 86% gap from the closest alternative.
Streamlight Knucklehead Spot stands out as the longest runtime option for max runtime, with about a 600% 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$189.9Most expensive
US$166.73Cheapest
Weight
517 g (18.24 oz)Lightest
655 g (23.10 oz)Heaviest
Length
267.9 mm (10.55 in)Longest
234 mm (9.21 in)Shortest
Output
Max lumens
5600 lmHighest output
180 lmLowest output
Max candela
528529 cdHighest candela
11000 cdLowest candela
Beam distance
1454 m (4770 ft)Highest
210 m (689 ft)Lowest
Max runtime
300 minShortest runtime
2100 minLongest runtime
Power & durability
Battery type
2 x 21700 rechargeable USB-C batteries
NiCd rechargeable battery pack or 4 AA alkaline batteries
Charging type
USB Type-C
Unknown
Rechargeable
Yes
Yes
IP rating
Unknown
IPX4
Impact resistance
1.5 m (5 ft)Lowest
2 m (7 ft)Highest
Material
AL6061-T6 aerospace-grade aluminum alloy with hard anodization
High-impact, super-tough nylon polymer
Use case profile
Best for
Professional deep-sea divingUnderwater marine explorationNavigating murky waters
FirefightingSearch and RescueSituations requiring articulating head beamDurability and long beam distance
Common praise
High brightness with focused beam for underwater useLong maximum runtime with battery swap capabilityDurable, corrosion-resistant design suitable for saltwaterIntuitive side switch allows easy one-handed operationWaterproof with triple o-rings and 1.5m impact resistance
Articulating 360-degree head for flexibilityLong beam distance of 210 metersMultiple brightness levels including long runtime moonlight modeDurable, shockproof construction with IPX4 water resistanceMagnet with strong pull for hands-free use
Common complaints
Mostly specialized for diving; less suited as general EDC flashlight
Relatively heavy at 655 gramsBattery pack not included, uses either NiCd rechargeable battery pack or 4 AA alkaline batteriesCharging cords and chargers sold separately