I would say that it is a mistake and that the “4” refers to the the 4 “nucleous” that the XHP50.2 led has! Also, in such small light, there is no space for 4 of that leds, as far as I can tell 
In the pictures you can see that the lights are triples and not quads lol.
Fasttech i would email the manufacturer and tell them off, i know the description is copy and pasted to Fasttech store from what the manufacturer specs. How can a manufacturer get it so wrong? Now you have to go and fix up 3 separate listings sigh!
That image is of the M4 while Notmyrealname was asking about the U16
Different lights
This listing states 4* Nichia, 4* SST-20 but the pictures shows 3 LEDs lol
https://www.fasttech.com/search?ON%20THE%20ROAD%20M4%20Mini%20LED%20Flashlight
Sorry, you are right! I thought that you were referring to the question above about the U16!
You are right, something is wrong, the photo or the description I bet on the description!
I think they’ve confused the U16 specs with another light. Fasttechs flashlight listings have many errors like this.
2300lm from a tiny 16340 light would be amazing though (for a few seconds anyway). You’d have to use it with a lanyard otherwise you’d be dropping it when it got hot.
The M4 looks interesting and the claimed 1500lm is also impressive. I would like a magnetic tail cap though as that has been useful on my M3 Pro.
To be fair to Fasttech, in this case the specs are not wrong! Those are the specs provided by the manufacturer. I had access to some unreleased (yet) information and those specs match the original ones. The U16 has a XHP50.2 with 2300lumens and the M4 puts out 1500. The only thing is that the original information about the M4 states 4xLuminus SST20 and that seems to be wrong, according to the photo.
Let’s wait and see what is right and what’s not!!
Yeah, the M4 looks interesting. I could use it, but only if it doesn’t have a magnet.
On The Road normally is consistent on the builds, so I believe that if the M4 has a magnet it can be easily removable. This is form my experience with the M3 Pro that also has a magnet in the tailcap
Thanks for the info!
No problem :+1:
Hello Notmyrealname,
The tail cap is spring-loaded, there are 4 emitters(same Nichia 219C/Luminus SST-20) included, one is in the middle, you can see the below picture:
The previous three lights have the reflector cup but the middle one doesn’t have.
Ummm……Does anyone know if this is possible? and if it is what the purpose or reason is?. Just an aux LED?
Sure it's possible and this light, and OTR's in general, are nothing fancy so it's probably just another LED in parallel offering more lumens, more flood. I'd love to buy one just to see how it's done, unless FT wants to send me one to review (hint, hint) 
Normally the wire hole is in the center but doesn't have to be. There's some sort of black showing on the left in the pic, and possibly a wire solder pad - could be the black wire.
It's not a bad idea to squeeze quad LED's into a triple, you keep the head diameter small and with lower amps these have, you get more lumens/amp I would think.
You could very well be right but as there are other specs being given that don’t seem to make sense on other new OTR lights I’m going to wait until I see OTR’s specifications or a review. If you’re right It’s an interesting design.
Fenix PD36 TAC Mechanical Tactical LED Flashlight
1*Luminus SST70 LED / 8-mode / 3000LM / pure white / 1*21700 / USB rechargeable / IP68 waterproof
Voltage: 3.7-4.2V
Head diameter: 26.5mm
Tail diameter: 25.4mm
Tactical and duty modes for flexibly needed choice and operation.
Patented dual-function tactical switch for instantly tactical activation.
Single-handed toggle switch for mode selection.
Lockout function avoids accidental activation.
Reverse polarity protection, to protect from improper battery insertion.
Made of durable A6061-T6 aluminum.
Premium type HAIII hard-anodized anti-abrasive finish.
The Fenix PD36 TAC flashlight is a mechanical flashlight that remains in pocket size but focuses on tactical employment. Included with a 21700 rechargeable Li-ion battery, the PD36 TAC emits a max 3000-lumen output and has an impressive beam distance of up to 274 meters. The PD36 TAC features a dual-function tactical switch which enhances its tactical capabilities. The Tactical Mode strengthens the PD36 TAC with a faster operation and simplified selection of high and instant strobe. Switch to the Duty Mode by rotating the toggle switch, the PD36 TAC delivers 6 output modes including a strobe. Made for professional use, security and law enforcement, the PD36 TAC is truly countable to deliver reliable, powerful lighting for a wide range of situations.
Fenix LR35R LED Flashlight
6*Luminus SST40 LED / 6-mode / 10000LM / pure white / 2*21700 / USB-C rechargeable / lanyard / IP68 waterproof (2m underwater)
Reflector diameter: 43.5mm
Head diameter: 51.5mm
Tube diameter: 46.5mm
Tail diameter: 46.5mm
This Smiling Shark…is it next-mode memory and what emitter does it use?
It is no memeory function, and the emmiter is L2.
Authentic Nitecore HC60 V2 Outdoor LED Headlamp
1*LED / 8-mode / 1200LM / pure white / 1*18650/2*CR123 / USB-C rechargeable / IPX7 waterproof / 180’ adjustable
Max Beam Intensity: 4240 cd
Advanced temperature regulation
Power indicator
100’ wide range flood beam
Elastic and breathable headband
1m impact resistance
