Flashlight Record

Sofirn

Sofirn SD11 Diving Light

The Sofirn SD11 is a high-output handheld diving flashlight featuring 5000 lumens, IPX8 waterproof to 100m, 4 light sources including warm, cool, neutral white and red light, powered by a rechargeable 26800 battery with USB-C charging, and a user-friendly magnetic rotary switch interface.

Last updated21 July 2026

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Weight331 g (11.68 oz)

PriceUS$59.99

Max lumens5000 lm

Battery1 X 26800 Rechargeable Lithium Ion Battery (7500mah)

Technical Specs

Specifications

CategoryHandheld Flashlight

Length155.3 mm (6.11 in)

Head diameter50.5 mm (1.99 in)

Body diameter50.5 mm (1.99 in)

Max lumens5000 lm

Max candela14800 cd

Beam distance244 m (801 ft)

Max runtime660 min

Battery type1 X 26800 Rechargeable Lithium Ion Battery (7500mah)

RechargeableYes

Charging typeUSB Type-C

IP ratingIPX8 (100 METERS WATERPROOF)

Impact resistance1.5 m (5 ft)

MaterialAl6061-t6 Aluminum Alloy

Switch typeDual Side Switches: Magnetic Rotary Switch And Push Button

Output Profile

Modes

▣Off▣Cool White (6500k) - Low, Medium, High, Turbo, Instant Neutral White▣Warm White (3000k, Cri 90) - Low, Medium, High, Turbo, Instant Neutral White▣Neutral White (5000k)▣Red Light (660nm) - Low, Medium, High, Flashing

Carry Profile

Best for

▣Scuba Diving▣Underwater Photography▣Fishing▣Cave Exploration▣Water Work

Field Signals

Common praise

✓

Very bright 5000 lumens with long 244 meter beam distance

✓

Outstanding color rendering with CRI 90 warm light and neutral white option

✓

Durable aluminum construction with IPX8 100m waterproof rating

✓

Convenient USB-C recharge and included high-capacity battery

✓

Simple yet effective dual-switch interface with battery level indication

Watchlist

Common complaints

⚠

Relatively heavy at 331 grams with battery

⚠

Large size compared to typical EDC flashlights

⚠

No detailed official specs for the included proprietary battery

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