Speras M10

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Speras M10 review

Speras M10 specifications

Brand/ModelSperas M10
Flashlight categoryEDC flashlight / keychain?
LED1*SST20 4000K CRI90 / 6500K
Max. output120 lm (4000K) / 200 Lumens (6500K)
Max. beam distance43m / 58 meters
Max. beam intensity456 cd / 840 cd
Battery config.1*AAA
Onboard chargingN/A
Review dateMarch 2023

Review intro:

At 1 Lumen we have reviewed about a dozen Speras flashlights, and it looks like we will be adding many more.

Speras has a wide variety of flashlights, ranging from small keychain flashlights like this M10, to the P10R v2 thrower pumping out 10,000 lumens.

Meet the Speras M10, a small new flashlight from Speras, available with a cold white, and a neutral white High CRI LED. We’ve received both versions, so I’ll test them both.

And since there aren’t that many high CRI AAA flashlights, this could be an interesting choice.

Package quality.

The flashlights arrived in small retail packaging that is designed to be hung on a retail display hook. The package features a clear picture of the flashlight on the front. This will give you a good idea how the flashlight looks like. On the side of the box are 2 checkboxes to indicate each LED version. The top has 6500K and the bottom 4000K / CRI 95.

On the back, you will find the flashlight’s features and specifications. This is what you find inside the box:

  • The flashlight: Speras M10
  • AAA battery (without an insulator)
  • 2 spare O-rings
  • Manual

Flashlight in use

The M10 is shipped with an AAA Alkaline battery, without an insulator, so you can start using your flashlights out of the box. I would prefer an insulating disc, because the battery wouldn’t accidentally be turned on, like it probably happened with the M10 Plus I received, with 2 dead batteries.

It’s plenty small to use as a backup flashlight on your keys (but you have to find a way to attach it) or in your jacket. But it is lacking a normal lanyard attachment point, so you have to attach it to the pocket clip.

The body has some knurling but is not very rough, and slippery. The pocket clip gives you a bit more grip, but it’s still a small AAA flashlight. You could add some grip tape if you want to increase its grippiness.

The pocket clip is pretty neat. It is a 2-way pocket clip, so you can carry it relatively deeply in your pocket, but also clip it to the bill of a baseball cap. That way, it works like a headlamp, so you have both hands free for the task at hand.

The switch it uses is a forward-clicky, so a half press will turn the light on momentarily. And mode switching is also done by half-pressing, to switch between high and low.

That adds to the variety of tasks you can use the M10 for. And as I mentioned earlier, it’s probably an okay flashlight for your keys, or in your pocket for EDC. I wouldn’t use it as a work light because of the lack of power and battery life.

Build Quality and Warranty

While the build quality of the M10 may not be the best in class, it’s still pretty good.

The machining appears to be of pretty good quality and the tailcap is the only removable part.

The tailcap has brass threading, so it screws nice and smooth.

While the M10 Plus is available in 2 different colors (black and gray), the M10 is only available in black. But they might become available in different colors as well.. who knows.

The Warranty according to the Speras website:

1. Within 30 days, free replacement. SPERAS will provide 30 days free replacement service of purchase for any manufacturing defects if problems come into being in normal use; We will replace it with the same model. If the model has been discontinued, customers will receive a product with similar or improved model.

2. Within Warranty time: Usually we provide 5 years warranty, some may provide lifetime limited warranty( for example E1). Within the warranty time, any defects please contact local dealer or distributor for warranty support. We will repair or we replace a new product for you according the defects. 

3. The free warranty does not cover any damages or failure caused by:

    a. Normal wear

    b. Rough operation

    c. Battery leakage

LED, Lens, Bezel, Beam, and Reflector

Even when you don’t get to choose a specific flashlight color, Speras gives the option to choose between 2 types of LEDs.

And the choice is between an SST20 with 6500K, and the SST20 with 4000K and high CRI (CRI>95).

But of course, we will test this, to see if this is true.

Whatever LED you choose, you get a PMMA TIR optic to a very uniform beam, with a quick but smooth transition from hotspot to spill.

There is a clear hotspot and not too much spill.

I measured the beams in High mode with the popular Opple Light Master Pro (III), as well as the Asensetek Lighting Passport Pro Standard spectrometer.

Here’s the measurements I got with the spectrometer:

M10 Cold white

  • CCT: 5490K
  • CRI (Ra): 68
  • Duv: 0,0170

Here’s the measurement I got for the M10 Neutral White high CRI in High mode:

  • CCT: 3647K
  • CRI (Ra): 95
  • CRI: 93
  • DUV: 0.0051

You can see the measurements I took with the Opple Light Master below. Until now, the measurements with the Spectrometer are a little lower than the Opple.

Dimensions and its competition


Speras M10MillimetersInches
Length86 mm3.4 in
Head diameter15 mm0.6 in
Body diameter13 mm0.5 in

Dimensions are rounded to the nearest millimeter, and to the nearest tenth of an Inch.


Speras M10Weight in gramsWeight in oz.
Without battery:23.6 g0.84oz
With battery (Alkaline)35.3 g1.25oz
With battery (Eneloop)35.5 g1.25oz

Speras M10 flashlight comparison

Size compared to other AAA flashlights

Group 1: from left to right: Reylight Pineapple Mini, Olight i3T EOS, Speras M10, Lumintop EDC01

Group 2: Speras M10, and Speras M10 Plus

Speras M10 UI : User interface and driver

Speras doesn’t mention whether the flashlight works on 10440 batteries, so I suppose it’s just for AAA batteries (1.2V, 1.5V). And it has a forward-clicky switch, so you have to select the lighting mode before you turn it on. After the light is switched on, you can’t change modes, unless you turn it off again.

Available main modes:

  • Low, High

Available special modes (blinkies):

  • None

From OFF:

  • Half-press: momentary On
  • Single-click: activates the light (with mode memory)

From ON:

  • Half-press: nothing
  • Single-click: turns off


  • There are no shortcuts

Mode memory:

  • Yes, so you will return to the last used mode

Blinky modes menu:

  • There are none

Low battery warning:

  • Not really, but the output will be reduced

Lock-out mode:

  • No, but it has a mechanical switch, so a lockout may not be necessary.


  • Not visible by eye

Speras M10 Charging and batteries

I can be pretty brief here. There is no onboard charging.

And in terms of batteries, the M10 arrives with an Alkaline AAA battery, without an insulator. This means that you can use the flashlight out of the box.

However, I do not recommend leaving the Alkaline battery inside the flashlight when it is stored. There are just too many occasions Alkaline batteries leaked inside a flashlight and made it useless.

We recommend using rechargeable NiMH batteries like the standard Panasonic Eneloop AAA.

Alkaline batteries are weaker but have a higher voltage. And they can also run the flashlight longer until they are completely drained. Eneloop batteries will damage below 0.6V, and can give less energy at low voltage.

Performance test

This is the gear I used for testing:

GearPurposeLink to buy
Hagner E4-XMeasuring beam intensity (throw)Inquire at Hagner.se
Extech SDL400Lumens and logging runtimesAmazon.com, Amazon.co.uk,
Leica Disto D2Distance for throw measurementsAmazon.com, Amazon.co.uk,
Asensetek Lighting Passport Pro StandardSpectrometer for LED measurements

Lumen measurements:

The output measurements in this review are based on my homemade integrating spheres, each equipped with an Extech SDL400 Lux Meter. For consistency and accuracy, a calibration light (Convoy S2+ with 249lm and a Convoy S2+ with 261lm) is measured prior to each set of lumen measurements.
For high-output lights, one of the lux meters uses an ND camera filter to prevent the lux meter to max out. This is either the Kenko PRO1D ND16 up till about 80,000 lumens or Gobe ND32 for anything above.

All of my readings were taken from a fully-charged Panasonic Eneloop AAA battery. I used the included AAA battery for runtime testing, so I could only do 1 test.

The measurements were taken manually at turn on and 30 seconds. The 10 minute numbers are taken from the runtime graph. Keep in mind that the Alkaline measurements at 30 seconds could actually be 31 or 32 seconds, because of the delay in the Extech SDL400 luxmeter.

ModeSpecs@ turn on(highest*)30 sec10min
CW Low (Eneloop)3 lm11
CW High (Eneloop)200 lm139 lm148 lm146 lm45 lm
CW High (Alkaline)200 lm137 lm147lm145 lm44 lm
NW Low (Eneloop)3 lm11
NW High (Eneloop)120 lm112 lm120 lm118 lm38 lm
NW High (Alkaline)120 lm109 lm118 lm116 lm38 lm

*Highest. Keep in mind that the highest measured output was just before 1 minute. See measurements.

Speras M10 battery life and runtime

The runtime test was done with the 50cm home made integrating sphere, combined with the Extech SDL400 data logging Lux Meter.

ModeSpecifiedMeasured runtime (ANSI FL1)Time till shut off
CW High (Alkaline)1h 12min3h 01min3h 52min+
CW High (Eneloop)1h 12min2h 05min9h 17min+
NW High (Alkaline)1h 12min1h 26min11h 43min+
NW High (Eneloop)1h 12min2h 30min2h 53min+

None of the runtime tests ran long enough for the flashlight to fully turn off. They lasted many hours at a very low output.

The problem with this is that they discharge rechargeable batteries, like the Eneloops I used, too deep. This can easily result in damaged batteries. So be careful, and replace the batteries when the light goes to 1lumen output.

Also, I measured the ALkalines after the runtime tests, and they were still at 1.3V. I then used these batteries in the flashlight for my kids’ bedroom at night and ran for at least 2 nights longer in Low mode. This means that the flashlight does not use its full capacity in high mode!

About ANSI FL1 standards: The runtime is measured until the light drops to 10% of its initial output (30 seconds after turning on). This does not mean that the flashlight is not usable anymore. The last column shows how long the light actually works till it shuts off. If there is a + symbol, it means that the test was stopped at that particular point, but the light was actually still running. This happens on certain occasions, with certain drivers, firmware, or batteries.

Spera M10 vs other AAA flashlights

Here’s a comparison graph between the Speras M10 and some other AAA flashlights.

Speras M10 peak beam intensity and beam distance measurements

Measurements were taken indoors with a Hagner E4-X Lux Meter, at 2 meters, only with the Eneloop AAA batteries, because the included Alkaline battery was used for testing its runtime. And looking at the data, the Alkaline would throw the beam about as far as the Eneloop.

ModeSpecsCandelas measuredMetersYards
Low12 cd866
High840 cd872 cd 5965
Low12 cd866
High456 cd688 cd5257

Fortunately, they easily reached the claimed candelas.

About peak beam intensity: Peak beam distance according to ANSI FL1 standards: The calculated value of distance in meters at which the flashlight produces a light intensity of 0.25 lux. (0.25 lux is about the brightness of a full moon shining on an object). The columns ‘Meters’ and ‘Yards’ use rounded numbers.


For the following beamshots, I used a Canon EOS 5D Mk2 with a 50mm lens. Manual settings: ISO1600, 1/30 sec, F4, 5000K

The white wall is about 5 meters away, and the fence is about 4 meters.

Compared to the following flashlights:

  • Speras M10 (CW)
  • Speras M10 (NW)
  • Lumintop EDC01
  • Olight i3T EOS

Disclaimer: This flashlight was sent to me for review at no cost by Speras. I have not been paid to review, nor have I been holding back on problems or defects.

Final Verdict


  1. LED choice between CW and High CRI NW
  2. Includes a 2-way pocket clip
  3. No PWM visible


  1. High drops to low a bit too early, even if Voltage is still adequate.
  2. The battery is shipped inside the flashlight without an insulating disc
  3. Not reaching near the claimed output for the NW version
  4. A little pricey for what you get

Explanation on star ratings:

1: Avoid: my phone flashlight would be a better choice – 2: Poor: significant defect or issues; almost unusable – 3: Average: some defects or issues; but still usable 4: Good: recommended (minor issues) – 5: Great: highly recommended

Reviewer Marco
Author: Marco

3.5 stars: ★★★⋆

On paper, the Speras M10 seems to be a nice little flashlight with a nice output and runtime. Especially for people who like high CRI lights, because the NW version has high CRI. Unfortunately, the output didn’t come close to the advertised output for the Neutral White version though.

On top of that, the output drops rather quickly from 100+ lumens to about 40-50 lumens in about 1 minute. And a few more cons you can find above.

Buy your Speras M10 here

1lumen selects and reviews products personally. We may earn affiliate commissions through our links, which help support our testing.