Olight i1R 2 Pro Keychain Flashlight Review

Olight i1R 2 Pro Keychain Flashlight Review

The Olight i1R2 Pro Stars and Stripes is a keychain flashlight offering USB-C charging and a twisty interface. Read on for more!


Official Specs and Features

Here’s a ShareASale link to the Olight i1R 2 Pro Keychain flashlight product page.

Versions

It looks like this Stars and Stripes version makes three total editions of the i1R 2 Pro flashlight by Olight. There’s also black and orange! Their body has a bit more texture milled into the sides as well as having a different color. I think internally they are the same, though.

Price

Cleverly, the sale price is $19.76!  That probably represents America’s 200th birthday year.


Short Review

Surprisingly I’ve never had an i1R 2 Pro before – I can’t recall even having an i1R 2 (the “not Pro” version).  I have reviewed the iXV Ti though and was quite fond of it. This light is very similar! I like it – I like the Stars and Stripes design; I find it to be very nicely done.

Long Review

The Big Table

Olight i1R 2 Pro Keychain Flashlight
Emitter: CSP LED (-)
Price in USD at publication time: $19.76
Cell: Internal
High (Cooled) Runtime Graph High (Uncooled) Runtime Graph
LVP? ?
Switch Type: Twisty
On-Board Charging? Yes
Charge Port Type: USB-C
Charge Graph
Power off Charge Port No
Claimed Lumens (lm) 180
Measured Lumens (at 30s) 211 (117.2% of claim)^
Candela per Lumen 4.5
Claimed Throw (m) 48
Candela (Calculated) in cd (at 30s) 76lux @ 3.182m = 770cd
Throw (Calculated) (m) 55.5 (115.6% of claim)^
Claimed CCT
Measured CCT Range (K) 4800-5100 Kelvin
Item provided for review by: Olight
All my Olight reviews!

^ Measurement disclaimer:  I am an amateur flashlight reviewer.  I don’t have $10,000 or even $1,000 worth of testing equipment.  I test output and such in PVC tubes!!  Please consider claims within 10% of what I measure to be perfectly reasonable (accurate, even).

What’s Included

Olight i1R2 Pro Keychain Flashlight what's included

  • Olight i1R 2 Pro keychain flashlight
  • Charging cable (USB to USB-C)
  • Manual

Package and Manual

manual

Build Quality and Disassembly

Olight i1R2 Pro Keychain Flashlight

This is a fairly simple light, I’d say.  Maybe that’s because it’s just a two-mode twisty.  But actually, it offers USB-C charging, so it’s not that simple internally.  The build quality seems great, with a design choice here or there that is a bit annoying.

I love the Stars and Stripes look – did I say that already.  Yes, this is a light made in China. No need to get all bent out of shape about it. It’s still a nice looking light.

The tailcap has a spot for a split ring to be attached.  This bump out does not come off.

Olight i1R2 Pro Keychain Flashlight tail end

Between the head and tail (which don’t really come apart completely) is an o-ring.

Olight i1R2 Pro Keychain Flashlight showing o-ring

Size and Comps

Length: 2.02 in/51.3 mm
Body Diameter: 0.64 in/16.2 mm

WEIGHT
0.78oz/22g (Including Battery)

If the flashlight will headstand, I’ll show it here (usually the third photo).  If the flashlight will tailstand, I’ll show that here, too (usually the fourth photo).

Olight i1R2 Pro Keychain Flashlight in hand

Here’s the test light with the venerable Convoy S2+.  Mine’s a custom “baked” edition Nichia 219b triple.  A very nice 18650 light.

And here’s the light beside my custom engraved TorchLAB BOSS 35, an 18350 light.  I reviewed the aluminum version of that light in both 35 and 70 formats.

Olight i1R2 Pro Keychain Flashlight beside the TorchLAB BOSS 35 (custom engraved)

Here’s the Olight i1R2 Pro keychain flashlight with the iXV Ti I mentioned above.

Olight i1R2 Pro Keychain Flashlight with olight keychain flashlight

And here’s the Olight i1R2 Pro keychain flashlight with my other two Patriot editions!  Note that the blue on this new one is slightly darker than on the other two seen here. (Not a trick of lighting – it’s actually darker.)

Olight i1R2 Pro Keychain Flashlight with other patriot editions

Retention and Carry

The only means for carrying the Olight i1R2 Pro keychain flashlight is this split ring on the tail end.  The part where the split ring attaches is not removable – even if you remove the split ring, that little knob will still be there.

Olight i1R2 Pro Keychain Flashlight tailcap split ring

The split ring is tiny but perfectly sufficient for attaching the Olight i1R2 Pro keychain flashlight to a keychain!

Just like on the Surefire Titan Plus, I’d rather this little knob be gone.  It’s probably possible to permanently grind that off!

Power and Runtime

The cell that powers the Olight i1R2 Pro is built-in.  It’s a 130mAh 10220 cell.  As far as I can tell, there’s no way to access it or change it.  Thus, when the battery reaches end-of-life, the light essentially does too.

Olight i1R2 Pro Keychain Flashlight internal battery

Here are runtimes for both modes, High and Low. In fact, two test of High – one cooled and one uncooled.

Olight i1R2 Pro Keychain Flashlight runtime graph Olight i1R2 Pro Keychain Flashlight runtime graph Olight i1R2 Pro Keychain Flashlight runtime graph

 

Charging

On-board charging on the i1R 2 Pro comes thanks to a built-in USB-C charging port.  To access this port, loosen the head completely.  The head is captured – it will not fall off and get lost.  However, it’s captured to exactly the point you can see below – the USB-C port is “fully exposed” here.

Olight i1R2 Pro Keychain Flashlight usb-c charge port

That level of exposure is not quite enough for me.  Yes, the charging cables I used work fine, but they’re a bit hard to get into the port.

Near the charging port is this charging indicator.  When the i1R 2 Pro is charging, this indicator is red.  When charging is complete, this indicator turns blue.

Olight i1R2 Pro Keychain Flashlight charging indicator

An appropriate cable is included: USB to USB-C.

Olight i1R2 Pro Keychain Flashlight charging cable

Here are a few charging cycles.

Olight i1R2 Pro Keychain Flashlight charging graph Olight i1R2 Pro Keychain Flashlight charging graph

Modes and Currents

Mode Mode Claimed Output (lm) Claimed Runtime Measured Lumens Tailcap Amps
High 180 23m 211
Low 5 12h 9

Pulse Width Modulation

Neither mode uses PWM.

For reference, here’s a baseline shot, with all the room lights off and almost nothing hitting the sensor.  Also, here’s the light with the worst PWM I could find.  I’m adding multiple timescales, so it’ll be easier to compare to the test light.  Unfortunately, the PWM on this light is so bad that it doesn’t even work with my normal scale, with is 50 microseconds (50us).  10ms5ms2ms1ms0.5ms0.2ms.  In a display faster than 0.2ms or so, the on/off cycle is more than one screen, so it’d just (very incorrectly) look like a flat line.  I wrote more about this Ultrafire WF-602C flashlight and explained a little about PWM too.

User Interface and Operation

The Olight i1R2 Pro keychain flashlight is a twisty.  There are markings on the tailcap to help a user know what to do, but of course, it’s very simple.

Olight i1R2 Pro Keychain Flashlight twist operation

The markings are very easy to read.

Olight i1R2 Pro Keychain Flashlight twist operation

Below you can see the gap in a state of “just” for each mode.  Left is “just off” – the biggest gap.  Middle is “just Low” – the mediumest gap.  And the rightmost photo is when the light is in High, which is the smallest gap.

Here’s a UI table!

State Action Result
Off Tighten head Low
Low Tighten head High
High Loosen head Low
Low Loosen head Off

LED and Beam

Olight surprisingly does state what emitter is used in the Olight i1R2 Pro keychain flashlight, though I am completely unfamiliar with it.  They say it’s a “CSP LED.”  Anyway, we can see the tests below and know what we need to know.

Olight i1R2 Pro Keychain Flashlight CSP LED

The “CSP” emitter is paired with a TIR optic.

Olight i1R2 Pro Keychain Flashlight CSP LED Olight i1R2 Pro Keychain Flashlight on and headstanding Olight i1R2 Pro Keychain Flashlight on

LED Color Report (CRI and CCT)

Olight went with this new/unknown LED, but it’s nice to note that the CCT is around 5100K.  That’s great!  Perfectly acceptably great.  Thank you Olight!  The downside is that the CRI is not great, but still above what I typically just straight out call “low CRI.”  This one clocks in around 75 CRI, which is probably “low to middle” CRI.

Beamshots

These beamshots are always with the following settings:  f8, ISO100, 0.3s shutter, and manual 5000K exposure.

Tint vs BLF-348 (KillzoneFlashlights.com 219b version) (affiliate link)

I keep the test flashlight on the left, and the BLF-348 reference flashlight on the right.

I compare everything to the KillzoneFlashlights.com 219b BLF-348 because it’s inexpensive and has the best tint!

 

Conclusion

What I like

  • Nice titanium construction
  • Very simple user interface
  • 5100K output!
  • Great beam profile

What I don’t like

  • Low to medium CRI
  • Battery is completely inaccessible

Notes

This content originally appeared at zeroair.org.  Please visit there for the best experience!

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