At the end there will be a summary for those who like only particulars. In each topic I will bold the key sentences, so it will be easier to notice what’s the most important. Enjoy!
This flashlight was send by Speras, check their website and this flashlight: E21 – Speras Light
They also have a Kickstarter campaign: https://www.kickstarter.com/projects/speraslight/speras-e21-a-2000lm-compact-but-powerful-edc-flashlight?ref=18ktrd
Table of Contents:
-
General parameters
-
Package content
-
Appearance, parameters
-
UI, runtime and charging
-
PWM
-
Waterproofness
-
Light pattern, tint
-
Beamshots
-
Gallery and Summary
| Type | Description |
|---|---|
| Material | Aluminium |
| Reflector | Smooth |
| Lens | Glass, AR coated |
| LED | SST40 6500K |
| Switch | Mechanical, forward type |
| Brightness | 2000lm max, theoretical ANSI/NEMA F1 |
| Throw | 322m, 26kcd |
| Power | - |
| Modes | 5 + strobe, SOS |
| Mode memory | Yes |
| Battery | 1x 21700 (LG INR21700M50LT), built-in |
| Charging | USB type C, 5V 2A, charging time 3h |
| Reverse polarity protection | - |
| Low voltage protection | Yes |
| Waterproof | IP68, up to 2m underwater |
| Impact resistance | 1.5m |
| Size | [Diameter: (Head: 25.4mm / Tube: 25.4mm)] / Length: 128mm |
| Weight | Flashlight: - / Flashlight + battery: 135g |
Inside were:
-
Flashlight
-
Lanyard
-
Metal clip (mounted)
-
USB charging cable
-
USB A to USB C adapter
-
Manual
Isn’t it nice? Look at the inside of this box: it is totally custom, each foam piece is cut to fit perfectly. It is so cute! I can’t help imagining they packing and preparing it. ”Put this foam here” ”Wait, leave a handwritten note so he knows how to unlock it”.
Just look at the manual! It is just printed on a plain A4 paper.
”Here, take this paper and print our manual”
And they even added a picture of the flashlight!
It is amazing, I think all manuals should now include pictures of flashlights.
Otherwise how will you know you got the right flashlight? Right?
What if you received a different one? How can you know?
Now you can simply compare it!
Like that:
Yes, this is the right one, I can clearly see.
What about this one:
No, this doesn’t seem right…
Well, this one is still different
Better but still no
Is this a headlamp?
No, this is not what I ordered
It is not even a flashlight
Still no
What even is that
Not very small, not very big. I mean, it’s rather small considering they put there a large button, charging port and rather deep reflector.
Let’s dive deeper (but not too deep, so we don’t implode):
Aluminium ”tactical” bezel
Glass, AR coated lens, aluminium SMO reflector, SST40 6500K LED
Windows 10 logo
I mean Speras E21 logo
USB type C charging port (it serves as a power bank as well), well protected by a rubber cover
Deep knurling, helps with secure grip
Attached two way metal clip with lanyard hole
Big rubber button
Inside:
UI
Innovative UI, there is one button which have 2 functions: on/off if you press it like that (so…normally)
or you can change modes or have momentary moonlight from off state by pressing from the side, like that:
How does it work? There are 2 metal surfaces inside, and when they are brought into contact by something, function mentioned above triggers.
But how is it possible, if there is only rubber there?
It turns out, this rubber is conductive on the inside, and only on the inside
Cool
This is why it is so big and pronounced, so it’s easier to push it.
SST40 is not that powerful, but you probably immediately spotted a problem: accidentally turning it on in a backpack. This is why it has a lockout mode, you nudge it 6 times to lock it, and 3 times to unlock it. You cannot simply unscrew the tailcap to mechanically lock it.
Runtime
Heat dissipation
Max declared surface temperature = 60°C
In my tests I got ~ 55°C after a minute, and it settled at 50°C after 3 minutes.
I know it shows 54, but it went to 55.
Charging
USB type C charging port (well covered with soft rubber), charging time 3 hours.
You can also charge a smartphone, because the flashlight acts as a power bank
AND THEY INCLUDED A USB TYPE A TO USB TYPE C ADAPTER!
This is huge, because not everyone has a double USB C cable.
I was not able to detect the PWM on the lowest brightness, my camera was showing something that might indicate PWM, but it was very very quick, and I am not even sure if it was just an artefact or PWM.
Declared IP68, which means: ”No ingress of dust; complete protection against contact (dust-tight). A vacuum must be applied. Test duration of up to 8 hours based on airflow. ” + ”Immersion, 1 meter or more depth ”.
Here it is immersion up to 2 meters.
Luminus SST40 6500K, 2000lm max brightness (ANSI/ NEMA F1 standards), max throw 322m 26kcd
SST40 6500K produces greenish halo around the hotspot, and generally greenish tint on lower brightness, transiting into violet tint on high brightness. Manufacturer specified ”Light spot angle: 9.5° ” and ”Light flood angle: 53° ”
Also the tactical bezel renders sharp edges, but it’s not visible during regular use.
ISO200
t2s
f/3.5
5000K white balance
General picture of what the forest looks like:
Beamshots of Speras E21:
If you don’t see any pictures here, that’s probably because I haven’t done them yet… I am sorry. You know, the forest is pretty far away, about a 40-minute walk to get there, at least 30 minutes to take pictures (sometimes I spend there 2 hours) and 40 minutes to go back home. I am laaaaazyyyy. Why am I still typing this? I don’t know. Maybe I want you to appreciate the effort… If you are quick enough to read it, you can consider saying thank you in the comment. I will delete all this text tomorrow when I go to the forest, tak pictures, note everything in my smartphone (brightness, flashlight order), edit the pictures, copy to different folders, upload to the internet and think about a clever comment about the pictures to add here.
Yes, I might be using it as an excuse to show off my keyboard 
But look at it
Isn’t it great?!
It has those great screws
Nice finished metal sides
USB type C charging port, and you can use it wirelessly or on a cable, with Windows or Mac (if you’re a weirdo)
Plastic bottom with rubber pads
2-position kickstand
Fully illuminated
If you want your keyboard to be reviewed, contact me now!
100% professional detailed unbiased review
.
.
.
Well…that was weird…
Speras E21 equipped with SST40 6500K can output up to 2000 lumens. SMO reflector provides tight beam with good reach and spill as well. Built-in 21700 5000mAh battery is okay. If you plan on using a flashlight very often, it might not be the best option for you. But as most Li-ion cells, this one should remain 80% of its original capacity after 500 cycles. You can use it as a power bank as well.
This flashlight is like a dinner in the restaurant - it is prepared, ready to eat, but you can’t enter the kitchen and change ingredients, grab a frying pan and fry the meat.
If you are familiar with Convoy brand, their flashlights are like cooking at home - you probably won’t prepare as good meal as in the restaurant and won’t have an IP68 or power bank function in your flashlight, but you will be able to change LED, battery or reflector easily, or add more garlic, sauce or whatever you like. You get the point.
Pros:
-
Innovative tail button
-
IP68
-
USB type C charging port
-
Power bank function
Cons:
-
Built-in battery
-
Hard or impossible to disassemble
If you have any questions, put them below, thanks for sticking for a while 
