Fenix LD42 High Output 4AA LED Flashlight with Mechanical Rotary Switch 1000 lumens Output
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Fenix LD42 High Output 4AA LED Flashlight with Mechanical Rotary Switch 1000 lumens Output

by: Fenix


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Fenix LD42, 4 AA High-output flashlight with Mechanical rotary switch 1000 lumens maximum output. Outstanding long-range beam which is able to locate the target from a distance - a big help in night lighting and searching. With a patented technique of rotary mode switching, users are able to easily switch between 5 intensity levels. The mechanical side switch features strong anti-interference capability, which is safer for use.


Fenix LD42 Specs

LED Brightness Level Waterproof Specifications (Width, Length, Diameter) Weight Battery

5 output levels IPX-8 159.5 mm(Length) x 34 mm(Diameter) X 32.5 mm 100 g 4 x AA
ANSI/NEMA FL1 General Mode
  Turbo High Mid Low Eco
Output (lumens)  1000 Lumens  350 Lumens 150 Lumens  50 Lumens 5 Lumens 

1 hours 

10 min*

 2 hours

38 min

13 hours 10 minutes 36 hours 40 minutes

130 hours 

20 minutes


 350 meters  190 meters  125 meters  72 meters 23 meters   


 30625 candela  9025 candela  3906 candela  1296 candela

132 candela 


Impact Resistant (1m)

     1 Meters      

 Waterproof  : IPX68, 3 meters underwater


Note: The above specifications are the test results given by Fenix temperature of 21±3°C and humidity of 50% - 80%. The true per environments and the actual batteries used. *The Turbo output is measured in total of run time including output E
through its laboratory testing using 4 Pairdeer batteries under the performance of this product may vary according to different working environment and the actual batteries used.
The Turbo output is measured in total of run time including output at reduced levels due to temperature or protection mechanism in the design.

Battery Specifications

Type Dimensions
Ni-MH Battery AA 1.2V Recommended ✓✓
Alkaline AA 1.5V Usable
Non rechargeable
Battery (Li-ion)
AA 1.5V Usable
Rechargeable 14500 3.7V Banned x



    • 1000 lumens maximum output. 
    • 350 meters maximum beam distance
    • 130 hours 20 minutes maximum run time.
    • Powered by 4 AA ( Ni-MH / Alkaline) batteries 
    • Patented technique of rotary mode switching - fast operation and accurate selection.
    • Stainless Steel Clip
    • Flat body designed for comfortable holding.
    • Digital regulated circuit for maintaining a stable output.
    • Reverse polarity protection to protect from improper battery insertion.
    • Body with anti-roll and anti-slip design.
    • 4 AA batteries ( Ni-MH / alkaline ) batteries
    • No standby current safe and cost efficient.
    • Flat body offers a comfortable holding.
    • Light head is made of durable high strength and oxidation resistance aluminum ; light body is made of quality plastic.
    • Premium type HAIII hard-anodized anti-abrasive finished.
    • Toughened ultra clear glass lens with anti reflective coating.
    • IP68 rated protection , able to work in extreme environments.
    • Head Diameter : 34 mm
    • Length : 159.5 mm
    • Body Diameter :   32.5 mm
    • Weight : 100-gram, (excluding batteries)
    • Fenix LD42
    • Lanyard
    • Body Clip
    • O ring
    • Holster
    • User Manual
    • Warranty Card   
    • Combo #2 Includes  Diffuser Tip in white   
      Diffuser tips can soften the light and work as a camping light, signal light, reading light, tent light, etc.

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