RovyVon E90

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RovyVon E90 Specifications & measurements

Brand & Model	RovyVon E90
Flashlight category	EDC, Flat flashlight
Battery config.	Built-in 3000mAh lithium polymer
Switch type	Dual rear, one side
Dimensions:
Length	130 mm
Head diameter	30 mm
Weight with battery	116 g
LED & Beam
LED type	Luminus SST-40 6500K-7000K main emitters; unknown red, warm white, and UV side emitters
High CRI	No
Focusable beam	No
Features
Onboard charging	USB-C
Power bank	No
Specifications and measurements
Specified output	3500 lm
Measured output (30sec)	771 lm
Max. measured output (turn on)	2624 lm
Specified beam distance	200 m
Measured beam distance (30sec)	267 m
Specified beam intensity	10,000 cd
Measured beam intensity (30sec)	17,827 cd
Overall rating	4.5 stars

RovyVon, known for their small form factor EDC lights, has two main lines: Aurora, which are cylindrical, single emitter, keychain lights with built-in batteries, and Angel Eyes, which are flat, rectangular, multi-emitter, dual-fuel lights.

Now, they’ve extended their Angel Eyes lineup in more ways than one! Their latest models, including the E90, have grown from AAA-sized to full-sized flat lights. Featuring two forward emitters and three side emitters, the E90 offers a lot in a little package. Let’s see how it works!

What’s in the package

This might be the coolest box I’ve had a light come in. It’s a black plastic hard shell (and presumably very water-resistant) case that clamps shut! They’ve included thin strips of foam for padding so you can keep your E90 in there without much rattling around, though some thicker padding might be a good idea. This is definitely a box to keep around, even if you’re not using it for the E90!

The contents of the box include:

• RovyVon E90
• USB-C charging cable
• Instruction manual
• Plastic zip-top bag containing
  • Lanyard
  • Hex wrench for clip screws
  • Two (2) spare clip screws
  • Spare USB-C charging port cover

If you’re familiar with the Angel Eyes series of lights from RovyVon, then you’ll recognize some of their key features in the E90: Flat form factor, dual forward emitters, multiple side emitters, and dual buttons.

Built with a black, HAIII aluminum clamshell design sealed with a rubber gasket around the edge and PVD (Physical Vapor Deposition) coated steel buttons (though coated with what is unknown), the E90 strongly resembles the E30 Pro. The top of the body is flat and there are more indentations for grip on the side, but they both feature a triple emitter setup and 4 battery indicator lights on the bulging top of the light, with the switch for those emitters on one side and USB-C charging port on the other, and a screw-on top piece with two tactical-style buttons. The USB-C port cover is on tight enough to have an IP68 rating.

The clip is the biggest difference. The E90 has the deepest clip of its series, held in place with two tiny hex screws. RovyVon includes an equally tiny hex wrench to remove them if you want to carry it naked or adjust the tension on the clip. They do stick out a bit, though. While that may cause them to snag on something, it also provides a surface to push down on while you’re clipping the light to your pocket which isn’t the buttons since the clip is pretty tight. The clip is also bi-directional, so you can use it on a baseball cap. 

The side emitters allow you to clip the light to a shirt pocket for a hands-free forward facing beam, like a right-angle like, or head stand it for the same kind of effect when placed on a smooth, flat, horizontal surface. However, with the two tail switches of differing sizes, you can’t really tail stand it for ceiling bouncing, and there’s no magnet to attach it to a ferrous surface.

Being a tail switch light means it’s easier to use the overhand grip for the main emitters, and you’d actually use the same type of hold for the side emitters, too. If right-handed, this places the side button for the three side emitters right at your index finger. I feel like the layout works well for this design.

To use the E90, you’ve got three buttons: The EDC button, which controls most of the light’s functions; on/off, mode switching, sensor on/off, and battery switching. The tactical button, which allows for momentary turbo and strobe, with a half or full press, respectively. And the side button to activate the side emitters. The two tail buttons are pretty stiff, and the side button is recessed within its own bezel, so they’re less likely to accidentally activate and you can carry the E90 unlocked.

One other interesting feature of the E90 is that it has a proximity sensor. That’s the little black dot in between the emitters. I know this is a turn off for many people, but it can be disabled by holding the EDC button for 5 seconds from off. I’m torn on it. On one hand, when you’re up close to something, too much light creates a strong glare making it even harder to see, so that can make it easier to use and also by stepping down to ~100 lumens, it can prevent pocket fires. On the other hand, having it step down and back up repeatedly as you use it can be annoying. The range varies depending on what you’re illuminating; in testing against a lighter colored surface, the sensor activated about a foot away, while against a darker colored surface, I could get to about 4 inches away before it stepped down. The proximity sensor is only operable on turbo and high, so below that it won’t dim.

It’s nice to have white, red, and UV all in a single light. Even if you’re not a regular user, these side emitters can come in handy. The low modes of the white and red emitters are also low enough to be considered moonlight, which I consider an important part of an EDC light. I especially like how you get an even beam out of them. It just makes those low-light settings easier to use up close. Couple that with the bi-directional, deep carry clip and direct access to turbo and moonlight, and you’ve got a recipe for a good EDC light. Overall, it’s an easy light to carry and is packed with features.

The E90 is covered under RovyVon’s standard warranty (copied from their website): 

Within 2 years of purchase, we will replace or repair it as long as the product is not working anymore because of the factory defects. This does not include obvious user wear or extreme damage.

After 2 years of purchase, if your product(s) got a defective or issues, we’ll offer a discount for purchasing new product(s) at a same or similar value.

The E90 uses a pair of Luminus SST-40s, an inexpensive, high powered, cool white, domed, 5050 (5mm x 5mm) emitter, for the main, forward-facing emitters. These SST-40s are kept behind a TIR lens with a pebbled/honeycomb pattern on them for making the beam floodier, and gives the light a bug-eyed kind of look to it. The TIR is rather deeply recessed behind the plain bezel. Likely, this is a response to the E30 and especially E30 Pro having little to no bezel to protect the TIR. 

If you look very closely, you can see that while the TIR does a good job of focusing the two emitters into a single, circular hotspot, the corona is actually rectangular, being cut off by the edges of the bezel. It really won’t affect your usage; it’s just interesting to see.

RovyVon doesn’t list what emitters are used for the side red, white, and UV lights. With them, you get two white levels, two red levels and two red blinkies, and one UV level. The UV emitter gets hot fast, so watch your finger placement! The side emitters each have a small aspheric lens, making their output even and circular, with no hotspot. The white emitters are about 4000K and 70CRI while red looks to be about 625nm, instead of the 5000K and 650nm that the specs say. All of the side emitters use PWM, but it’s not noticeable. The plastic lens on these does protrude from the body, and can be scratched easily, as I’ve already found out.

More details: 

• LED Type: Luminus SST-40 6500K-7000K main emitters; unknown red, warm white, and UV side emitters
• High CRI: No
• Focusable beam: No

Spectral measurements: 

I used an Opple Light Master Pro to measure the flashlight at 1 meters distance. 

Mode:	CCT:	CRI Ra:	duv
Turbo	6010 K	68.4	0.0039
Low	5451 K	64.0	0.0109

Dimensions: 

The E90 is slightly longer and slightly heavier than the E30 Pro.

RovyVon E90	Millimeters	Inches
Length	130 mm	5.1 in
Head diameter	30 mm	1.2 in
Head width	15 mm	0.6 in
Tail end width (widest point)	23 mm	0.9 in

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

Weight: 

RovyVon E90	Weight in grams	Weight in oz
With battery	116 g	4.1 oz

Weight is rounded to the nearest gram and tenth of an Oz.

Flashlight size comparison with its competition:

Group 1: Emisar D4V2, RovyVon E90, Convoy S2+

Group 2: RovyVon E30, RovyVon E90, RovyVon E30 Pro

Group 3: Nitecore EDC27 UHi, RovyVon E90, Nitecore EDC29, Nitecore EDC23

Group 4: Olight Arkfeld Ultra, RovyVon E90, Jetbeam E26 Kunai UV, Olight Arkfeld Pro

Available modes: 

• Main: Eco, Low, Medium, High, Turbo
• Side: White low, white high, red low, red high, UV

Available blinky modes:

• Main: Strobe
• Side: Red flashing, red beacon

EDC Switch:

From OFF:

• Press and hold: On to Eco-only
• Single click: On to Eco-only mode*
• Double click: On to memorized level
• 3 fast clicks: Lockout
• Hold for 10 seconds: Toggle proximity sensor on/off

From ON:

• Press and hold: Off
• 1 click: Cycle through levels
• Double click: Memorized level, if started in Eco-only mode

Tactical Switch:

• Half press: Momentary turbo
• Full press: Momentary strobe

Side Switch

From OFF:

• 1 click: White low
• 2 clicks: Red low
• 3 clicks: UV

From ON:

• 1 click:
  • White mode: Toggle low/high
  • Red mode: Advance L-H-flash-beacon
  • UV mode: Off
• 2 clicks: Red low
• 3 clicks: UV
• Hold: Off

Mode memory:

• The last used mode will be memorized and accessible by turning on with a double-click of the EDC switch.

Shortcuts:

• To Low: Hold EDC switch from off
• To Turbo: Half press Tactical switch from any mode
• To Strobe: Full press Tactical switch from any mode

Low voltage warning/protection:

• When the voltage is low, the last indicator light on the top will turn red. 
• There is LVP on the built-in lithium polymer battery.

Strobe/blinkies

• Fully press the Tactical switch while in any main emitter mode (except lockout) to activate strobe. 
• Double-click the side switch to get to red mode, then click twice to advance to red flashing (bike mode). Another click will activate red beacon.

Lock-out mode: 

• 5 clicks from off will electronically lock out the light. This is important, as there is no way to mechanically lock it out. 

PWM

• Eco appears to be using PWM, but it’s not visible to the naked eye. The side emitters definitely use PWM.

Additional/summary info on the UI: 

• *1C on to eco mode is not officially part of the UI
• Turbo is only accessible through the tactical switch
• The side switch is not active while the main emitters are in use, and the tail switches are not active when the side emitters are in use.

Like all flat lights, including all of RovyVon’s Angel Eyes line, the E90 uses a built-in lithium polymer battery. This one happens to be 3000mAh, which is the largest battery I’ve seen in a flat light so far!

Charging is accomplished with the USB-C port on the side of the light and can be done with the included USB-A to USB-C cable, or USB-C to USB-C.

While the E90 is plugged in and charging, you can still use the eco and low levels, and the indicator lights on the front next to the side emitters will breathe. Once charging is complete, all four of the indicator lights will be solid. Since it’s charging at up to 3A, depending on the wall charger you’re using, the E90 can get warm. While this is great for quick charging, 3A is 1C (one times the capacity), which is on the high side for charging rate. You may want to consider using an older, less powerful USB wall plug to prolong the battery life.

Battery level indicator:

• 4 blue: 60-100%
• 3 blue: 40-59%
• 2 blue: 20-39%
• 1 blue: 5-19%
• 1 red: <4%

Description	Details
Compatible batteries	Built-in lithium polymer
Incompatible batteries	N/A
Low voltage protection/warning	red indicator light
Onboard Charging:
Onboard charging	USB-C
Power bank functionality	No
USB-C to USB-C charging	Yes
Max power of USB charger (port)	65 watts
Max power measured	5.2V 2.7A, 13.9W
Final battery voltage (charged)	N/A
Avg. onboard charge time	1h 30min

Lumen measurements

How Lumens are Measured: Understanding ANSI FL1 Standards How Lumens are Measured: Understanding ANSI FL1 Standards: The ANSI FL1 standards specify that output in lumens should be measured 30 seconds after turning on, as this is the standardized time for measuring brightness according to the industry standard. This is why we focus on this part in our measurements. The ANSI FL1 standards require an ambient temperature of 22 ± 3°C. We record the ambient the ambient temperature to identify potential reasons for any observed discrepancies.

To obtain these numbers, I used an integrating sphere and Extech SDL400 data logging lux meter. Measurements have been calibrated using a standardized calibration light provided by 1Lumen.

Please note the proximity sensor was disabled for these tests.

The specs are pretty close for the lower modes, but falters on the higher modes. High is only just above 80% of spec, and turbo is only 75%. Note that since turbo has a timed step down after 10 seconds, I’m counting the turn on value as the true turbo measurement. Turbo is supposed to be a quick burst. After 10 seconds, it drops down near the high level.

Also note that when the battery gets to a low enough level, turbo is essentially deactivated, and using the tactical switch will only get the light to the high level if it’s not already there.

Main emitters

Mode	Specified output	Turn on	30 sec.	10 min.
Eco	10 lm	11 lm	11 lm	11 lm
Low	60 lm	61 lm	61 lm	61 lm
Med	200 lm	214 lm	213 lm	212 lm
High	1000 lm	836 lm	825 lm	797 lm
Turbo	3500 lm	2624 lm	771 lm	–

*Turn-on and 30 second measurements are done manually, while the 10-minutes readings comes from the runtime graph. This is our standard approach, though some reviewers may choose a different approach.

As for the side emitters, white on high is only half of what it’s supposed to be. The others are kind of freebies, as the red emitters don’t have specifications, and white on low is under 1 lumen. 

Side Emitters

Mode	Specified	Turn on	30 sec.	10 min.
White – Low	1 lm	0.4 lm	0.4 lm	0.4 lm
White – High	100 lm	50 lm	50 lm	48 lm
Red – Low	–	7 lm	7 lm	7 lm
Red – High	–	28 lm	27 lm	25 lm

Ambient temperature during testing:

• 20°C /68°F

With the battery built in, it’s not possible to measure current.

Battery Life: Runtime graphs

How Runtimes are Measured: Understanding ANSI FL1 Standards About ANSI FL1 runtime 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.

To obtain these numbers, I used an integrated sphere and Extech SDL400 data logging lux meter. Measurements have been calibrated using a standardized calibration light provided by 1Lumen.

Output is very stable across all modes, so you’ll always have the amount of lumens you expect. No matter what level I tested, they all eventually dropped down to eco (10 lumens) before finally shutting off. Ultimately, they came in short of ANSI specs, but were closer to them by the time they shut off. High even ran a few minutes longer.

Turbo has a timed step down of 10 seconds, after which it reverts to high output, so I did not do a separate test for that.

Main emitters

Mode	Specified runtime	Runtime (ANSI FL1)	Time till shut off*
Eco	67h	–	–
Low	23h	22h 12min	22h 12min
Med	8h 30min	7h 12min	8h 02min
High	1h 42min	1h 24min	1h 48min

The side emitters made their numbers and thensome. 

Side emitters

Mode	Specified runtime	Runtime (ANSI FL1)	Time till shut off*
White, high	12h	13h 08min	13h 08min
Red, high	11h	11h 39min	11h 39min

*The last column reflects the total runtime until the light turns off. A “+” symbol indicates that the test was stopped at that point, but the light continued to run. This typically occurs with certain drivers, firmware, or battery types.

Peak beam intensity and beam distance measurements

About Peak beam intensity: Understanding ANSI FL1 Standards About peak beam intensity 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). This means that the intensity has decreased so much, it becomes difficult to see darker objects, or objects that don’t reflect light. The columns ‘Meters’ and ‘Yards’ use rounded numbers.

The numbers for candela were obtained with an Extech SDL400 data logging lux meter at 1, 5, and 15 meters, then averaged.

The throw is pretty good! Turbo is only 10 seconds long, so the reading here is the peak during that time. After that, it basically drops to high. The E90 scored higher in candela on all modes which had a specification.

Mode	Specified intensity	Specified beam distance	Candela measured	Meters	Yards
Eco	–	–	68 cd	16 m	18 yd
Low	–	–	395 cd	40 m	43 yd
Medium	700 cd	50 m	1222 cd	70 m	76 yd
High	3000 cd	100 m	4784 cd	138 m	151 yd
Turbo	10,000 cd	200 m	17,827 cd	267 m	292 yd
Side White, High	–	–	46 cd	14 m	15 yd
Side Red, High	–	–	22 cd	9 m	10 yd

Ambient temperature during testing:

• 20°C /68°F

Camera settings and distance: These were taken with a Canon EOS 600D with the following settings: 

• WB 5700K, ISO 1600, Speed 0.5sec, f/4.5, 18mm
• Distance to the other end of the playing field is 100 meters.

Beamshots of the following flashlights compared:

• RovyVon E90
• RovyVon E30 Pro
• Olight Arkfeld Ultra
• Olight Arkfeld Pro
• Nitecore EDC 27 UHi

Please note that the following beamshots are mainly intended to showcase the beam pattern and beam quality, rather than overall performance. These images are typically taken directly after activation, and in different seasons or weather conditions, and therefore do not fully represent its overall performance. In few cases the camera settings are even different and therefore not meant for performance comparisons. For accurate performance metrics, such as output, beam distance, and runtimes, you need to look at the performance section of this review.

Disclaimer: This flashlight was sent to us for review at no cost by RovyVon. We have not been paid to review, nor have we been holding back on problems or defects.

Buy your RovyVon E90 here

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