Comparison Console
Sofirn SD11 Diving Light vs Sofirn SK31
EDC Flashlights comparison. Compare price, weight, specifications, materials, and real-world use case.
Command Brief
Recommended read
Sofirn SK31 stands out as the lightest option for weight, with about a 33% gap from the closest alternative. Sofirn SK31 stands out as the cheapest option for retail price, with about a 12% gap from the closest alternative. Sofirn SK31 stands out as the highest output option for max lumens, with about a 36% gap from the closest alternative.
Decision Signals
What stands out
Sofirn SK31 stands out as the cheapest option for retail price, with about a 12% gap from the closest alternative.
Sofirn SD11 Diving Light stands out as the most expensive option for retail price, with about a 13% gap from the closest alternative.
Sofirn SK31 stands out as the lightest option for weight, with about a 33% gap from the closest alternative.
Sofirn SD11 Diving Light stands out as the heaviest option for weight, with about a 48% gap from the closest alternative.
Sofirn SD11 Diving Light stands out as the lowest output option for max lumens, with about a 26% gap from the closest alternative.
Sofirn SK31 stands out as the highest output option for max lumens, with about a 36% gap from the closest alternative.
Sofirn SD11 Diving Light stands out as the shortest runtime option for max runtime, with about a 98% gap from the closest alternative.
Sofirn SK31 stands out as the longest runtime option for max runtime, with about a 4445% 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$59.99Most expensive
US$52.99Cheapest
Weight
331 g (11.68 oz)Heaviest
223.3 g (7.88 oz)Lightest
Length
155.3 mm (6.11 in)Shortest
156.1 mm (6.15 in)Longest
Output
Max lumens
5000 lmLowest output
6800 lmHighest output
Max candela
14800 cd
Unknown
Beam distance
244 m (801 ft)Lowest
395 m (1296 ft)Highest
Max runtime
660 minShortest runtime
30000 minLongest runtime
Power & durability
Battery type
1 x 26800 rechargeable lithium ion battery (7500mAh)
21700 Li-ion rechargeable
Charging type
USB Type-C
USB-C 5V 3A, approx. 3 hours charging time
Rechargeable
Yes
Yes
IP rating
IPX8 (100 meters waterproof)
IPX8
Impact resistance
1.5 m (5 ft)
Unknown
Material
AL6061-T6 aluminum alloy
Aluminum alloy body, stainless steel bezel with tungsten spheres
Use case profile
Best for
Scuba divingUnderwater photographyFishingCave explorationWater work
Tactical useOutdoor useSearch and rescueLaw enforcementEDCHome defensePatrol duty
Common praise
Very bright 5000 lumens with long 244 meter beam distanceOutstanding color rendering with CRI 90 warm light and neutral white optionDurable aluminum construction with IPX8 100m waterproof ratingConvenient USB-C recharge and included high-capacity batterySimple yet effective dual-switch interface with battery level indication
High max output of 6800 lumensLong beam distance (395 meters)Robust aluminum body with stainless steel bezel and tungsten spheres for glass breakingEfficient LHP73B LED emitter with clean tintTriple-switch interface allowing intuitive controlExcellent water resistance with screwable aluminum USB-C coverLong runtime up to 500 hours on low modeIncluded rechargeable 21700 batteryBattery indicator for charge level
Common complaints
Relatively heavy at 331 grams with batteryLarge size compared to typical EDC flashlightsNo detailed official specs for the included proprietary battery
Lockout switch placement can be awkwardLockout switch sometimes malfunctions causing failure to turn on (resolvable by toggling lockout)Included battery has lower continuous discharge rating (CDR) than recommended for max turbo output
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