Rovyvon E3 Pro

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Rovyvon E3 Pro review

Rovyvon E3 Pro specifications

Brand/modelRovyvon E3 “Angel Eyes” Pro
CategoryEDC flashlight
LEDLuminus SST20
Max. Lumens700 lm
Max. Beam intensity / distance1,300 cd
Battery config.Internal LiPo + AAA
Onboard chargingUSB-C
ReflectorTIR optics
Review dateMarch 2022


Rovyvon makes a wide array of compact and EDC types of lights. They have a whole lineup of keychain lights in their Aurora series of every shape, material, and color. The new “Angel Eyes” E3 Pro is also considered a keychain light, but with a much different form-factor. Instead of a small cylinder shape, the E3 model is a flat, rectangular affair with two primary LEDs. It looks neat and a bit out of the ordinary, so I couldn’t wait to try it out.

Package quality.

The packaging of the Angel Eyes was a nice break from the usual. No cardboard box here. Rather, the E3 arrived in a hard, translucent plastic case with the Rovyvon logo emblazoned in a glossy inset. That plastic case wasn’t too fun to try and photograph against a white background. Inside that case, the flashlight and accessories were held in place by a bit of carefully formed paperboard. In all, the case contained:

  • RovyVon E3 “Angel Eyes” Pro
  • Pocket clip
  • Two different split rings
  • Manual

Flashlight in use

The Rovyvon E3 is just as small as I had hoped, maybe even a bit smaller. It disappears into the hand. The side profile of the E3 puts it barely larger than my smallest AAA lights, the Olight i3E EOS, and Skilhunt E3A. But of course, it’s about twice as wide. This slim and flat profile lets it practically disappear into your pocket. The E3 Pro has ridden, using its deep-ish carry pocket clip, in my jeans for a few days and I could hardly tell it was there.

That nearly-deep-carry clip can be positioned in either direction. One direction puts the LEDs down into my pocket, which is my preferred method of carry for lights. You can easily and quickly flip that around which makes it ready to clip onto the brim of a ballcap. There are 3 sets of grooves in the sides of the E3 that look like they’d be appropriate for mounting the switch. But alas, that’s not the case. Two sets are smaller and the clip doesn’t fully seat in them. You can only use the central-most grooves for the clip. The clip stays on fairly well, but I wouldn’t put my faith in it to keep the E3 attached outside of my clothing – its retention isn’t that trustworthy.

The lone e-switch sits a bit forward of center and my thumb didn’t have any problems finding or activating the button. There’s a raised ring around the switch that does a good job of preventing accidental activations. It also helps you find the button easily.

The package includes two different styles of split rings for use on your keychain. I’ll be honest, while I love keychain flashlights, I’d never put one on a keychain. I’m a bit of a minimalist and I’d never have much on my keyring besides my truck key, its remote fob, and a house key. I think the E3 is small enough that you certainly could keep it on your keys if you don’t mind a little bit of added bulk. For someone that won’t ever attach this to my keys, the large, protruding keyring attachment point on the end does irk me a little bit. I wish that Rovyvon could have found a way to integrate a flush-mount keyring attachment point.

Despite its small size, the E3 Angel Eyes packs quite a punch. It works well around the house and you could probably even take the dog for a walk with it, but due to its small battery capacity, you’d be limited to shorter excursions.

Build Quality, and Warranty

Some keychain lights look pretty boring and uninspired (sorry, Cyansky M1R). Not so with the Rovyvon E3! It may be rectangular, but attention was made to keep it from being a plain old box. The sides have a series of grooves machined into them. The center of the faces feature a wave pattern. And the gasket where the top section rotates out is actually a glow-in-the-dark material – a nice touch.

In true Rovyvon fashion, the E3 is offered in 6 different colors as of this writing: Aqua Blue, Orange, Green, Black, Gunmetal, and Desert Tan. The first 5 colors I mentioned are the “normal” E3 variations and are cut from 6063 aluminum. The model I was sent, the Desert Tan, is actually the “Pro” model of the E3 which is machined from 7075 aluminum. I’m no metallurgist, but from what I can find, the 7075 alloy benefits from the addition of some magnesium and zinc. These additions make it much stronger and more resilient.  

Overall, the build quality of the Rovyvon E3 Angel Eyes feels really good. My only slight concern (without anything to back this up) is the little clasp that keeps the top from rotating open. At first, I fidgeted with that little mechanism and then I thought better of it – I have no idea if that little clasp might wear out eventually.

Rovyvon’s warranty policy is as follows:

  • Within 2 years, repair or replace from issues due to factory defects
  • After 2 years, they may offer a discount for purchasing a new product as same/similar price

LED, Lens, Bezel, Beam, and Reflector

The anodizing color and aluminum alloy aren’t the only options when it comes to the Angel Eyes – Rovyvon has several LED combo offerings, though not every color and LED combination may exist. My particular sample has Cool White (6500K) LEDs.  Other options are Warm White High-CRI (4000K 95-CRI), one Cool White + one Warm White LED, and Cool White + Red LED. The white LED options are both Luminus SST20 LEDs, while the red LED is a Cree XP-E2.

The two LEDs sit below a smooth and fairly narrow TIR optic. The optic is either glued in place or has some sort of sealant around it. It doesn’t seem to have been applied perfectly on mine, as there are some gaps in coverage around the optic.  That doesn’t look to have any effect on performance and it is likely just cosmetic.

I measured the beam of my Cool White model with the Opple Light Master Pro and got these values:

  • CCT: 5530K
  • CRI: 63.8 Ra
  • DUV: +0.0129

Not spectacular readings, but keep in mind that the Opple isn’t a professional device.  It gives a fairly good baseline though and confirms that these are definitely low-CRI cool white LEDs.

Dimensions and size comparison

  • Length: 6.61 cm / 2.6 inches
  • Width: 2.75 cm / 1.08 inches
  • Height:1.35 cm / 0.53 inches


  • Without cells: 32 grams / 1.1 oz.
  • With cells (an Eneloop Pro AAA):  44 grams / 1.6 oz.

EDC & Keychain Flashlight comparison

Keychain lights, left to right: Skilhunt E3A, Olight i3E EOS, Sofirn C01, Rovyvon E3 Pro, Astrolux A01, Jetbeam Jet-U, Lumintop EDC01

EDC lights, left to right: Sofirn SP10S, Rovyvon E3 Pro, RovyVon S3

General size comparison: Rovyvon E3 Pro vs classic Zippo lighter

Driver & User Interface:

The UI of the E3 “Angel Eyes” is befitting of a pocket-carry light. While electronic lockout is an option, it tries to provide a useful feature set that doesn’t require you to use the lockout if you don’t want to. That causes some deviation from the “standard” / oft-preferred flashlight UI, but I think it’s fitting.

It’s also worth noting that since the E3 is offered in combo LED options such as Cool+Warm and Cool+Red, there are some UI differences between the models. My Cool White only model has the following UI:

Available modes: Moonlight, Low, Medium, High

From OFF:

  • Press and Hold: momentary High
  • Single click: Moonlight
  • Double click: last memorized mode
  • 3 clicks: Strobe
  • 4 clicks: Lockout

From ON:

  • Press and Hold: turn Off
  • 1 click: cycle modes (Low > Medium > High)
  • 3 clicks: Strobe
  • 3 clicks, from Moonlight: switch AAA power source to LiPo and back

Mode memory:

  • Yes, there is mode memory


  • To Moonlight: click from Off 
  • To High: hold (momentary) 
  • To Strobe: 3 clicks

Low voltage warning:

  • N/A


  • Strobe is access via a triple click

Lock-out mode: 

  • Activate lockout with 4 quick clicks
  • Unlock with another 4 quick clicks


  • No PWM was detected in any mode

Additional info on the UI: 

  • In general, I like this UI with the exception of hold-for-off.  I really wish it was click-for-off.

Batteries & Charging

The battery situation with the Rovyvon E3 is a bit unique. It has a small (around 200 mAh) LiPo battery that’s built-in. This helps keep the size small and the output fairly high. But what if the LiPo isn’t enough? Just slide in your favorite AAA battery to supplement the LiPo. When you do so, the E3 will default to using the AAA for the power source, but you can manually switch between the AAA and the LiPo.

As I do with any AA or AAA powered light, I recommend a high-quality NiMH battery such as an Eneloop. You certainly can use an alkaline battery, but you run the risk of battery leakage ruining your nice light. That’s ok in a pinch, but I wouldn’t trust alkaline batteries in the long run.

One thing that’s held me back from the Rovyvon Aurora series in the past is the reliance on micro-USB charging. In this day and age, I’m done with micro-USB and look solely for USB-C (or the occasional proprietary charger). Like the recent S3 light, the E3 eschews the micro-USB port in favor of USB-C! It even works with USB-PD (USB-C to USB-C) chargers. I observed a 0.5 amp charge rate, capable of topping the E3 up in 32 minutes. The charging indicator is a little blue LED that sits next to the charging port. It “breathes” blue when charging and switches to solid blue once it’s done. Subtle, but it works.

Performance test

Lux was measured by a UNI-T UT383 BT at 5 meters. Lumens were measured in a homemade lumen tube using a TSL2591 sensor, calibrated with a Maukka calibration light. Testing was performed with the built-in LiPo battery and an Eneloop AAA 900 mAh AAA battery.

Lumen measurements (for each mode)

Specs & Measurements for the built-in LiPo:

ModeSpecsturn on30 sec10 minutes
Moon0.5 lm0.1 lm0.1 lm
Low10 lm9 lm9 lm9
Med100 lm98 lm96 lm95 lm
High700 lm579 lm464 lm147 lm

Specs & Measurements for the Eneloop Pro AAA:

ModeSpecsturn on30 sec10 minutes
Moon0.5 lm0.1 lm0.1 lm
Low5 lm5 lm5 lm5 lm
Med20 lm20 lm20 lm20 lm
High100 lm97 lm95 lm72 lm

Parasitic drain:

  • Unable to test

Runtime graph

High, LiPo: started out at 579 lumens, fairly shy of the 700 lumen spec.  At 2 minutes it quickly ramped down to 147 lumens. At 31 minutes, output began dropping rapidly. It fell below 3 lumens at 48 minutes.

Med, LiPo: the E3 started out at 98 lumens and stayed there until output began dropping just past the hour mark. It dropped under 3 lumens at 1 hour and 21 minutes.

Low, LiPo: this test started right around 9 lumens and stayed flat until 8 hours and 24 minutes when it began dropping. It fell under 3 lumens at 8 hours and 49 minutes.

High, AAA + LiPo: the AAA High test started out at 97 lumens and output really started dropping at 45 minutes, but then at 48 minutes I got a surprise – output jumped back up to 94 lumens! It ran for another hour like that, eventually dropping quickly at 1 hour and 50 minutes. As it turns out, if the LiPo is charged up, it’ll switch over to that automatically once the AAA begins to deplete.

Med, AAA only: this turned on at 20 lumens and stayed there consistently until it dropped like a rock at 7 hours and 34 minutes.

Low, AAA only: the AAA Low mode turned on at 5 lumens and stayed there for 20 hours and 30 minutes before dropping off.

At no point in the testing did the Rovyvon E3 Pro get about 41°C.

Throw numbers: 

Throw was measured at 5 meters and 30 seconds.

ModeSpecsCandela measured MetersYards
Medium300 cd375 cd39 m43 yd
High1300 cd2250 cd95 m104 yd


Beam shots of the building are taken at 15 m (16 yd) using a Pixel 6 set to ISO 200 with 1/10 second exposure time.

Beam shots of the playset are taken at 30 m (33 yd) using a Pixel 6 set to ISO 200 with 1/2 second exposure time. The trees in the background are around 65 m away.

  • Rovyvon E3 Pro
  • ThruNite T1S
  • Xtar T2
  • ThruNite Archer 2A V3

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

Final Verdict


  1. Compact little EDC light
  2. Attractive styling
  3. Emitter and color choices
  4. USB-C charging
  5. Proper Moonlight mode


  1. A bit big for a keychain light
  2. Misses output specs
  3. UI has hold-for-off

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 Gabriel
Author: Gabriel

4 stars: ★★★★

I’m a big fan of keychain lights, I just choose not to use them on my keychain. When I first saw the Rovyvon E3 “Angel Eyes” Pro, I knew it was larger than I’d feel comfortable with putting on a keyring, but it would be perfect for my pocket. That slender, flat design works well for slipping into my jeans without any fuss.

Rovyvon did a nice job with the styling of the light. And they provide enough color and LED options to make it your own just-right light. That is, as long as you don’t mind a slightly unique user interface. I’m glad that it’s a click-for-on UI and has shortcuts to Moonlight (just 0.1 lumens!) and High. I’m not a big fan of hold-for-off, but I could get used to it… maybe. The ability to throw in a AAA in a pinch is a great option for when the built-in LiPo runs out and you don’t have a chance to charge it up.

The Rovyvon E3 Pro appears to be built well, looks good, functions nicely, and disappears into a jeans pocket – ready to go whenever you are. I like it!

RovyVon E3 PRO For Sale

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