Lumintop FW4A Flashlight Review – SST20 4000k Neutral White

Last Update 19-03-2021

Lumintop FW4A Flashlight Review, this Lumintop is part of the FW from the BLF members Series, it shares the specs of the FW3A, only, it has four! LEDs to gain some more lumens, a larger floody beam and some more distance.

It is available various led options but only grey in color

I chose the SST20 4000k NW FA3 95CRI as I’m in love with the creamy tint and very high CRI (Color Rendention Index), colors truly pop up and everything shines in a natural way


Emitter: 4x SST20 4000k NW FA3 95CRI
Optic: Standard TIR optical lens (seems a Carclo 10622)
Flux: ~3600 lm (XP-L Hi) – for the SST20 it should be 2000+ lm
Intensity: ~10,180cd ANSI throw ~208 m (XP-L Hi)
Firmware: Free software called Andúril
User interfaces: [1] Defaulted SMOOTH RAMPING. Instant access to TURBO mode is also provided. [2] STEPPED RAMPING UI. [3] MOMENTARY mode. [4] MUGGLE mode. [5] Electronic LOCKOUT.
Other functions: Battery check, sunset, beacon, tactical strobe, party strobe, bike flasher, candlelight, lightning storm
Battery: One 18650 cell. An unprotected cell is recommended. Max. length 66mm. The cell is not included.
Driver: FET+7+1 driver. Low parasitic drain while OFF
Body: Aluminum with knurling and polishing finish
Switch: Electronic tail switch
Ingress rating: Equivalent to IPX8
Weight: Approximately 63 g without cells
Size: 28.5 mm Ø head x 92.6 mm in length x 24.5 mm Ø tube

The UI is the awesome Anduril customizable and multi function UI designed by Toy Keeper, you can set low, high, ramping, or stepped modes.
There are also lockout modes with moon-low, candle and lightning storms accessory modes.
You can even set the temperature limits or know how much juice (volts) is left in your battery.

Other functions are:
Direct moonlight (long press from off)
Moonlight in locked mode (2 levels)
Memory mode (auto-manual)
Muggle mode
Electronic Lockout
Battcheck – Temp Check
Candle mode
Lightning Storm
Party strobe with various levels
Tactical strobe
Bike strobe
Stepped or Ramping mode (can be configured)

It runs on 18650 Li-Ion rechargeables, very easy to find and cheap to operate, I use Sanyo 18650GA’s they are 3.350mah and 10A, the quality is solid and they work well in any climate. offers a Samsung 35E as an additional option, the Sanyo is for me better, not only being often cheaper but it seems holds some more mAh capacity and is 10A vs 8A, although I don’t visually see much difference in output.

The Threads are smooth as is the anodization, for the price it’s a wonderful light, just don’t exagerate with TURBO as it obviously gets VERY hot. If used at home/work it dissipates less than outside, driving the boat at night it was only very warm but not impossible to hold.

Mine has no problems with the inner sleeve or the switch.

The switch needed a few presses to operate correctly, it was probably in need of a break-in, now it’s flawless.

I got the light 3 months ago and it’s one of my favourite EDCs, I have got no box pictures, surely there are plenty around! as I am more user oriented and I’m not as tech-savvy as others, here are some detail and user-oriented pictures.

some specs from


the color is simply beautiful, not grey not blue, pretty unique, not the usual pale black.

The Anodizing in Type HAIII of the aluminium body is gryppy, not shiny, just high quality.


4x SST20 4000k FA3 CRI95, my favourite led, look at those eyes, behind a standard Carclo 10622 (seems to me at least) medium flood optics


moonlight cream with a green glow gasket 



the tailcap still has the Bunny logo

the light can tailstand as the Electronic e-Switch is flush.


The clip is inserted before the tailcap, I have not tried to use it without it.

It is possible to attach a splitring with a lanyard through the little hole.

The FW4A comes with a Green GITD Silicone Diffuser, a neat addition, I love diffusers for tent or room illumination.

It’s the Size L: 30*28MM (Diameter* Length) and fits the FW4A wonderfully.


the Fw4A’s driver is a FET+7+1, the parasitic drain is negligible, none of my LM’s has had drain problems (out of 5 I own)


to insert the battery you have to remove the head, not the tailcap, which, should not be modified or removed, otherwise the light could face problems.

Battery is a Sanyo 18650GA 10A 3350mah


Size Comparison:

Victorinox Fieldmaster 91mm
Lumintop FW4A
Sanyo 18650GA Battery
Chris Reeve Knives Small Sebenza 21 S30V from 2010

Action Shots!

Charged Green GITD Turbo Glow Gasket


dark room, daylight outside


highest ramp mode (2 clicks from off)


TURBO (3 clicks from off – one click on, 2 clicks turbo)


highest ramp mode (2 clicks from off)

highest ramp mode (2 clicks from off) with diffuser

highest ramp mode (2 clicks from off) with diffuser


GITD charged diffuser (LEDs off)


highest ramp mode (2 clicks from off)


highest ramp mode (2 clicks from off) with diffuser


TURBO (3 clicks from off – one click on, 2 clicks turbo)


Action Shots for all reviews will be added during time, not easy to test everything with coronavirus…check back soon!

Last Words and Conclusions:

The Fw4A was bought from Lumintop Lighting directly
Price is around 54,95$ / 61,95$ with 35E battery
There are discount codes, I’ll add them later!

What I like:

  • GREAT Price and quality
  • great anodizing and grip
  • runs on 18650 rechargeables
  • powerful
  • rich Anduril UI

What I DON’T like:

  • gets hot pretty quick on Turbo, on High mode it’s OK
  • clip is cheap, very thin steel

Other considerations:

  • none right now

the light was bought with my own money, i was not paid for the review

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Check back soon for more!


Lumintop Lighting