EDIT 30 Nov 2018 - Post#3 Experience with Frosted TIR Optic
Hi BLF,
This is my review of the On The Road M3 Pro, the most recent version of the “old” and well known OTR M3. The flashlight and accessories were sent by On The Road Store at AliExpress, to whom I want to thank! 
You can find the flashlight on sale here (non-affiliate): Page Not Found - Aliexpress.com
There is also the official store of OTR here: http://www.zlsh.net/M3-Pro
The OTR M3 Pro can be bought in 2 versions, one with the charger kit, and other without! I was sent the package without charger!
Here is another review of this flashlight, by JasonWW: Mini Review of On The Road M3 Pro .
There are other threads on BLF about this flashlight, I will not link them here, but feel free to check them!
Here are some YT reviews as well, for those interested in a video review:
And now, the review!! :arrow_right:
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GENERAL SPECIFICATIONS
Body Material: T6061 Aluminium
Body Colour: “Titanium” colour
Emitter: XPL HD V6 1A (or XML2 U3-5C)
Lens: Glass, Double Side AR-Coated
Reflector: Orange Peel (aluminium?)
Switch: E-Switch (side)
Beam distance: 133 m
Beam intensity: 4430 cd
Water Resistance: IPX6
Impact resistance: 2 m
Batteries: 16340 Li-Ion / RCR123 / CR123
Low voltage warning: 10% battery (Constant Red) ; 5% Battery (Blinking Red) ; 0% (Power cut off)
In-Built Charger: USB-C
OTHERS
Driver: Constant Current Circuit (by manufacturer)
Battery Protection: Anti-reverse battery protection (Poka Yoke :question: )
Other: Active intelligent temperature control
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PACKAGE: THE FLASHLIGHT & ACCESSORIES
The On The Road M3 Pro arrived in a OTR branded cardboard box, thick, that protects its contents, and that is similar to the one of the OTR M1 and the OTR i3 , that I recently reviewed on BLF!
The box has a protection yellow seal in the opening part. On the side it has a sticker indicating the model of the flashlight and type of LED that we will find inside!
Bearing in mind that this is the version with no charger included, inside the box we can find: the OTR M3 Pro, 2 O-rings, the User Manual, a Pouch, an OTR branded Lanyard, a USB-C Cable, and an On The Road 16340 700mAh 3.7V 2.6Wh Li-Ion (ORB1607) battery.
The battery arrived installed in the flashlight and there was a thick plastic piece in the negative pole to prevent the cell discharge.
Let’s start by the flashlight! Small, compact, well made on the outside and inside, great machining, very good anodizing with a “matte” finish! This is what we can say by looking at / touching the flashlight!
It has an e-switch covered by an rubber OTR branded cap on the front, and on the back it has a rubber cap to cover the USB-C port of the in-built charger!
Outside it has cooling grooves in the area of the driver/charging port, and also 3 grooves around the head, in the area of the LED, that cover all the diameter of the head.
An overall looking also allows to see that on the head we find a well centred XPL HD LED and a stainless steel bezel with 6 grooves that can be used to help unscrewing the bezel. On the flat tail, there is a series number.
The flashlight arrived without a pocket clip, non-included in this package. The OTR Store sent me a clip that I will address later.
From the top to the bottom, again, we have the stainless steel bezel, a double sided AR coated lens, a sealing o-ring and an orange peel reflector.
When dismantled, the head reveals the threads where the reflector is screwed in. Unlike many other lights we have, this one is “proprietary” to this flashlight, in that way that it has threads to fit in! Despite, it can be used in other lights if we want to! 
The emitter PCB is aluminium, the wires are well soldered, there is white thermal paste between the plate and built-in shelf. Around the LED there is a white plastic gasket!
On the bottom, let’s see…
The tailcap is unscrewable so that we can access the battery! It is composed by a thin spring and a magnet! The spring can be easily removed (with tweezers or pliers) to reach and eventually remove/replace the magnet.
Outside, the tailcap has a lanyard hole to use…a lanyard I forgot to take a photo, but it’s there!!!
The body threads are square and arrived well lubricated there is no issue while (un)screwing it in or out! It also has a sealing o-ring on the tube!
The “magnetic function” of the tail works well, but I must confess this is not the strongest magnetic tailcap I have/know! The used magnet seems to be thin, being strong enough to adhere to a flat surface (fridge) and held its weight, but being difficult to get it suck in other surfaces (ex: knife). As it is easy to have access to it, the magnet may be replaced or removed!
Still, it is a handy feature and always help in some situations, no doubt 
As mentioned above, the USB-C charging port (vertical) is on the opposite side (back) of the e-switch! It is protected by rubber cap that protects well and at the same time can be easily “removed” to use the charging cable.
About the charging process:
a) it is recommended to use a 5V 2A charger to increase the speed charge;
b) when charging, the light under the e-switch will glow RED
c) when fully charged, the light under the e-switch will glow BLUE
d) approximate charging time (according to manufacturer specs) = 50 minutes
Some interesting things on the charging process:
a) with the battery inside and the tailcap fully screwed in, the e-switch light will be RED and there is no possibility to use the flashlight while attached to the charging cable,
b) with the battery inside + tailcap unscrewed, or without battery inside and the charging cable plugged in, the e-switch light will glow BLUE and the flashlight can be used as if it had a battery inside 
I’m not sure how good or bad this can be for the flashlight. But imagine you want/need to plug it into a powerbank or electrical current…you can have light for hours without using a battery inside Just saying
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ACCESSORIES
User Manual
Let’s jump to the accessories and start by the User Manual. It is written in English, being quite effective in what concerns the overall structure and functioning of the flashlight.
As I mentioned above, there was an On The Road 16340 700mAh 3.7V 2.6Wh Li-Ion (ORB1607) battery included in my box/kit! However, buyers must confirm if this is included in the “no charger kit”! This is a standard unprotected battery from OTR, that seems to be around for many years now!! It doesn’t seem to be adequate for high drain devices, but it will behave on these flashlights.
However, I don’t have means to test it, so sorry about it! :person_facepalming:
(right picture was borrowed from my OTR i3 thread 
)
Another thing that was sent to me by OTR Store was the diffuser! This diffuser is similar to the ones sold by Convoy Store, it fits the S2+ heads, and can also be used in other flashlights with the same head diameter (OTR M1, Jetbeam RRT01, Sofirn SP32, …).
It allows a good light diffusion and evens the beams, “neutralizing” cooler tints
The pocket clip is probably an extra as well on the package! It is OTR branded as on they other flashlights. It is similar to the one of the OTR i3, and not shinny as the one from the OTR M1. It fits quite well, it is not reversible, it is quite sturdy and well made, and also seems to be scratch resistant!
The pocket clip also acts as a lock feature, once it can be placed in the front the e-switch, blocking it and preventing accidental activation. This light has no electronic lockout! It works well in any of the 4 sides of the flashlight!
And this is the flashlight with all the accessories: Lanyard, Pocket Clip, Diffuser !!
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DIMENSIONS AND WEIGHT
To end this part, here are some physical measurements of this flashlight!
Dimensions
Weight
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USER INTERFACE
The OTR M3 Pro’s User Interface is well explained in the User Manual, but I’ll make a teardown
It has the following levels:
Moonlight > Low > Medium > High
Turbo
Strobe / Beacon / SOS
The OTR M3 Pro was built to provide a flexible use to its users/owners. Therefore, it has 2 ways of functioning, a “regular” and a “special” ( = MODE LOCK).
About the regular mode, this is how it works.
FROM OFF
- press the e-switch for 0.5 s – light will TURN ON in the last used mode [it has memory for the 4 regular levels ML / L / M / H ]
2) double click – Accesses TURBO
3) triple click – Acesses Strobe > Beacon > SOS (with single click between these)
4) long press & hold 4 s - Accesses special mode - MODE LOCK
WHEN ON (in the regular used levels)
a) single click to advance and cycle though ML > L > M > H > ML > L…
b) double click – accesses TURBO. When in TURBO:
1 – single click – returns to last used mode
2 – press 0.5 s – Turns the light OFF
3 – triple click – accesses Strobe
c) triple click – accesses STROBE. When in Strobe:
1 – single click – advances in the sequence Strobe > Beacon > SOS > Strobe > …
2 – double click – accesses TURBO
3 – press 0.5s – Turns the light OFF
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About the special mode - MODE LOCK - , this is how it works.
This “special mode” allows to lock 1 specific level that we want to use, either it be ML / Low / Medium / High! When that specific level is configured, we are able to use the OTR M3 Pro as a single level flashlight if we want to
TURBO, Strobe > Beacon > SOS can still be accessed in the same way as described above, from ON or from OFF.
A single click turns the light ON or OFF.
The MODE LOCK can be “configured” when the light is ON or OFF by long pressing & hold ( 4s ) the side switch.
a) When the light is ON, chose the level you want to be used as the “one”, and press & hold the switch! The light will switch OFF and blink 3 times. Next time it will only switch ON in the chosen mode.
b) When the light is OFF (after using the regular levels) press & hold the switch. The light will switch ON in the last used mode, will blink 3 times and that will be the “chosen” mode. After that, single click for ON/OFF and the multiple clicks for Turbo, Strobe…
To reverse and get back to the “regular” levels, just press the 4 seconds and it will reverse!!
NOTE: I found this “MODE LOCK” very useful, specially when I want to use the ML level, or a Low/Medium level without having to remember what was the last used mode (memorized)! So I think this is an exceptional feature of this flashlight!
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OUTPUT & RUNTIMES
As stated in the User Manual, the output tests were made with a16340 battery and XPL HD V6 Led, so it will change according to the LEDs used.
Still, these are the outputs vs runtime:
ULTRA LOW > 5 lm >>> 60hours
LOW > 160 lm >>> 2h15m
MEDIUM > 360 lm >>> 1h
HIGH > 720 lm >>> 35 m
TURBO > 1020 lm >>> s/d
STROBE > s/d
BEACON > s/d
SOS > s/d
It is probable that the output will reduce with time due to the temperature protection integrated in the driver!
NOTE: I believe that the lowest output (ML) is actually lower than 5 lumens! Why? Because if compared to the Olight S1R Baton I in the ML mode, these lights are very very similar! I don’t have a way to measure it but, at 50 cm from my luxmeter in complete darkness, both the S1R Baton I (ML) and the OTR M3 Pro (ML) give me “7 lux”. Considering that the S1R supposedly has 0,5 lumens on Moonlight…I guess the M3 Pro also has a lot less than the advertised 5 lumens on the ML level.
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FLASHLIGHT COMPARISON
Some flashlight comparison, with the OTR family and with other flashlights!!
OTR M1 > OTR M3 Pro > OTR i3
OTR i3 > OTR M3 Pro > OTR M1……………………Jaxmnve M3 > OTR M3 Pro > Olight S1R Baton I
Manker E11 > Olight S1R Baton I > OTR M3 Pro > Wuben E05
Some photos, under UV (notice that it is more yellow than orange, revealing the CW tint that the LED will produce) and above the LED (there is no visible or invisible PWM)
Here we can take a look at the beam pattern! The OP reflector, that is not very tall allows a good centered spot but also a good spread on the light, making the beam quite open to illuminate “peripheral” parts when pointing at a spot!
Here we have some beamshots to see what this light is capable of
INDOOR
1,5M >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 2M
OUTDOOR
Please note that on the more distant ones I photographed the ML modes, but it is so low that my phone couldn’t catch the beam! So it will show more from Low to Turbo
5M >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 5-7M
16M >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 20M
35M (building)
BEAMSHOT COMPARISON on max output
Left to right:
OTR M3 Pro > Olight S1R Baton I > Wuben E05 > Sofirn SF14 (with XPL2 Led & BLF X5/6 Driver)
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CONSIDERATIONS
What do I like?
- Overall quality. The size, the machining, the anodizing, the beam quality, the general usability! Even if compare to an Olight S1R (I or II) this is not the smallest light in its segment, this is a very nice pack for it size , output and quality!!!
2) The Accessories. The accessories for this flashlight are very nice and allow a “plain” use for it in different occasions and in different configurations.
3) The MODE LOCK. For me it is the thing that stands out in this flashlight, the possibility to configure it for a single level (+ special modes as turbo, strobe,…).
4) The Shortucts. The shortcuts to Turbo and Strobe, from ON or OFF are a very nice thing that I like in my lights (despite not all have them, of course ).
5) USB-C Charging. Since I have a cellphone with USB-C charging I’ve been surrendering myself to thus USB type. So having it in this flashlight is a plus, as I can take it with me without needing lots of cables or chargers. Also, the possibility to use the flashlight with the USB cable plugged in and without battery is a plus, just in case
What would I change?
- Shortcut to Moonlight. Honestly, to make this my “perfect EDC flashlight”, a direct access to Moonlight mode would be enough (a bit like Olight does…). The output and the overall quality only lack this shortcut to make it “perfect”!
2) The Mode Spacing. There is a big step between ML and Low levels, so a lower Low level would be appreciated to make it more balanced !
What I didn’t try?
Well, I didn’t try to remove the pill as I’m afraid of damaging the driver and the USB port. Otherwise, I would solder some longer wires, make a copper or brass pill and turn this into a triple flashlight :smiling_imp:
What I did so far?
I replaced the OP reflector + lens by a TIR optic and the beam is better now It lost some throw, but it improved the homogeneity of the beam
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GLAMOUR
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And that’s all! I really like the On The Road M3 Pro, it is a very reliable flashlight and with a minor adjustment it would be perfect
I thank to OTR Store in AliExpress for sending this for this review!
Any questions or comments, let’em come!!
Best regards :+1:
