Comparison Console
Sofirn SD15 vs Sofirn SP40
EDC Flashlights comparison. Compare price, weight, specifications, materials, and real-world use case.
Command Brief
Recommended read
Sofirn SP40 stands out as the lightest option for weight, with about a 23% gap from the closest alternative. Sofirn SP40 stands out as the cheapest option for retail price, with about a 3% gap from the closest alternative. Sofirn SD15 stands out as the highest output option for max lumens, with about a 150% gap from the closest alternative.
Decision Signals
What stands out
Sofirn SP40 stands out as the cheapest option for retail price, with about a 3% gap from the closest alternative.
Sofirn SD15 stands out as the most expensive option for retail price, with about a 3% gap from the closest alternative.
Sofirn SP40 stands out as the lightest option for weight, with about a 23% gap from the closest alternative.
Sofirn SD15 stands out as the heaviest option for weight, with about a 29% gap from the closest alternative.
Sofirn SP40 stands out as the lowest output option for max lumens, with about a 60% gap from the closest alternative.
Sofirn SD15 stands out as the highest output option for max lumens, with about a 150% gap from the closest alternative.
Sofirn SD15 stands out as the shortest runtime option for max runtime, with about a 99% gap from the closest alternative.
Sofirn SP40 stands out as the longest runtime option for max runtime, with about a 13369% 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$36.99Most expensive
US$36Cheapest
Weight
120 g (4.23 oz)Heaviest
93 g (3.28 oz)Lightest
Length
119 mm (4.69 in)Longest
108 mm (4.25 in)Shortest
Output
Max lumens
3000 lmHighest output
1200 lmLowest output
Max candela
36225 cdHighest candela
4520 cdLowest candela
Beam distance
381 m (1250 ft)Highest
136 m (446 ft)Lowest
Max runtime
98 minShortest runtime
13200 minLongest runtime
Power & durability
Battery type
21700 lithium-ion
1x18650 Li-Ion
Charging type
External charger (single bay, micro-USB powered)
Micro-USB
Rechargeable
Yes
Yes
IP rating
IPX8
IPX7
Impact resistance
Unknown
Unknown
Material
Anodized aluminum
Aluminum
Use case profile
Best for
Diving useUnderwater explorationGeneral flashlight use
CampingHikingIndustrial useClose-range workBudget headlamp use
Common praise
High output with good measured lumensSolid build quality with smooth anodizationEffective rotary dial interface with clear mode detentsIncludes wrist lanyard for retentionExternal charging with included 21700 charger and cable
High lumen output for priceGood beam quality with Cree XP-L LED and OP reflectorLightweight and comfortable headbandDurable aluminum construction with good waterproofingMagnetic tailcap for hands-free useLow voltage protection to safeguard battery
Common complaints
Lack of grip texture on body and tailcapNo onboard chargingNo pouch, magnet, or pocket clip included
Lack of a moonlight modeHeadband loops are somewhat tightClip could be deeper to improve balanceNo USB-C charging (uses micro-USB)
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