Comparison Console
Sofirn SD15 vs ThruNite Guiding Light
EDC Flashlights comparison. Compare price, weight, specifications, materials, and real-world use case.
Command Brief
Recommended read
Sofirn SD15 stands out as the lightest option for weight, with about a 8% gap from the closest alternative. Sofirn SD15 stands out as the cheapest option for retail price, with about a 26% gap from the closest alternative. ThruNite Guiding Light stands out as the highest output option for max lumens, with about a 25% gap from the closest alternative.
Decision Signals
What stands out
Sofirn SD15 stands out as the cheapest option for retail price, with about a 26% gap from the closest alternative.
ThruNite Guiding Light stands out as the most expensive option for retail price, with about a 35% gap from the closest alternative.
Sofirn SD15 stands out as the lightest option for weight, with about a 8% gap from the closest alternative.
ThruNite Guiding Light stands out as the heaviest option for weight, with about a 8% gap from the closest alternative.
Sofirn SD15 stands out as the lowest output option for max lumens, with about a 20% gap from the closest alternative.
ThruNite Guiding Light stands out as the highest output option for max lumens, with about a 25% gap from the closest alternative.
ThruNite Guiding Light stands out as the shortest runtime option for max runtime, with about a 8% gap from the closest alternative.
Sofirn SD15 stands out as the longest runtime option for max runtime, with about a 9% 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$36.99Cheapest
US$49.95Most expensive
Weight
120 g (4.23 oz)Lightest
130 g (4.59 oz)Heaviest
Length
119 mm (4.69 in)Shortest
130 mm (5.12 in)Longest
Output
Max lumens
3000 lmLowest output
3757 lmHighest output
Max candela
36225 cdHighest candela
18000 cdLowest candela
Beam distance
381 m (1250 ft)Highest
270 m (886 ft)Lowest
Max runtime
98 minLongest runtime
90 minShortest runtime
Power & durability
Battery type
21700 lithium-ion
1x 21700 rechargeable lithium-ion
Charging type
External charger (single bay, micro-USB powered)
USB Type-C
Rechargeable
Yes
Yes
IP rating
IPX8
IPX8
Impact resistance
Unknown
1.5 m (5 ft)
Material
Anodized aluminum
Aluminum
Use case profile
Best for
Diving useUnderwater explorationGeneral flashlight use
Flood useEveryday carryTactical useOutdoor exploration
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
Exceptional brightness for the priceSolid build quality with aluminum bodyIPX8 waterproof rating suitable for submersionLightweight and compact for a 21700-based flashlightIncludes battery and comprehensive accessory kitUSB-C onboard chargingGood value with high lumens-to-dollar ratio
Common complaints
Lack of grip texture on body and tailcapNo onboard chargingNo pouch, magnet, or pocket clip included
Lacks electronic lockout requiring physical tail cap lockoutNo included pocket clip, users need holster or aftermarket clipMode resets to default on power cycle; no mode memorySome users may find absence of built-in charger inconvenient
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