Fireflies E01 Osram / SST40W Flashlight

Product Code: E01
Availability: In Stock
$35.00 $28.00

Available Options

* Shipping Option:

* Emitter type:

* color:

* Additional accessories (Optional):

Notice before ordering:

We will be on holiday from 18th to 31th Jan.   Back orders during holiday will be shipped after 31th Jan.

USA warehouse orders has no influences.  All USA warehouse orders can be shipped normally and timely during our holiday.


E01 Osram PM1 W2 version  (1500 Lumens   125 000 cd)

E01 SST40W version             (2300 Lumens  40 000 cd)


About Batteries

battery discharge no big than 20A , Or it might cause damage to the emitter.

Recommended battery: 

Sumsung 50E 10A 5000mAh 21700

Sumsung 48G 10A 4800mAh 21700

LG 10A 4800mAh 21700

LS  10A 4000mAh 21700

all types of 18650 (<20A discharge)


About Heat Dissipation Structure 

E01 has very compact size,however the heat dissipation structure is very well designed. 

With 7 deep heat sink trenches and 15mm thick integrated shelf , the light can sustain 2300lumens Turbo for a long time .


About thermal Step down

E01 set the tempreture limit to 50℃  by default. The light will automaticly step down when the body temperature is over 50 degree.  The temperature can be configured by users by clicking the switch for 10 times.

Product Description:

  • Luminus SST40W N5 5700K emitter with lifespan of 50,000 hours 
  • Max 2300 Lumens
  • Ramping (From 1 Lumens to 1000 Lumens) ; Double click to Turbo 2300 Lumens
  • 4 + 1 modes (20lumens>100lumens>500lumens>1000lumens); Double click Turbo 2300 Lumens
  • Made of 6063 aluminum alloy 
  • Body color:  Matt Black / Clear anodizing
  • Black HAIII Anodising Surface Finish  /  Clear-ano HAII Anodising
  • 1x 21700 / 18650   (excluded) 
  • 6 degree angle TRI lens
  • Toughened ultra-clear glass lens 
  • Digital current regulation on lower brightness 
  • IPX6 waterproof 
  • with Purple switch leds 
  • Size:  120mm(L )x 34mm(Head) x 26mm(Body)
  • Net Weight: 96 gram    

Accessories:  standby O rings ; Landyard; Gift box ; Pocket Clip


How to operate the light? 

Fireflies uses free software distributed under the terms of the GNU Public License version 3

ROT66 Anduril code from toykeeper/flashlight-firmware

  • Single click -- On / Off
  • Double Clicks--Max brightness 2300 Lumens
  • Triple Clicks from Off -- Battery voltage Reading 
  • Triple Clicks from On -- Changing over Ramping/Modes
  • Four clicks -- Lock / unlock the light
  • Five clicks-- Momentary mode (disconnect power to exit)
  • 8 clicks -- Temperature Reading
  • 10 clicks -- Thermal Configuration
  • Hold switch to change brightness levels ; Loose switch to keep brightness level.
  • Click, click, hold: strobe .  From Strobe a double-click to SOS

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