Olight I1R 2 EOS flashlight review

150 lm output
400 cd intensity
integrated Li-Ion battery

The Olight I1R 2 EOS flashlight was released in 2019. It uses CSP LED, TIR reflector and integrated Li-Ion battery. The powerful emitter in this flashlight provides up to 150 lm output, 400 cd intensity, and a beam distance of 40 m.

Curious if the I1R 2 EOS shines bright? You'll find out soon!

Table of Contents

  • Olight I1R 2 EOS specifications
    • Body, materials, weight, colors
    • System, LED, lens, reflector
    • Performance, flux, intensity, throw
    • Software, user interface, modes
    • Features, battery, protections
    • Accessories, package contents
    • Links
  • Conclusion, pros and cons
  • Photos
  • Comparisons

The content of this article reflects our own experiences and viewpoints. We aim to offer insights on a topic, and we hope others find it helpful and motivating. Additionally, we make every effort to provide accurate and comprehensive coverage.

Olight I1R 2 EOS / I1R2EOS

The I1R 2 EOS is an impressive flashlight that offers both power and reliability. TIR lens plays a significant role in shaping the beam pattern of the I1R 2 EOS flashlight. This light has 2 modes of lighting. Without mode memory, each time you turn on the I1R 2 EOS, it will start from the first mode in the sequence. The flashlight uses rechargeable batteries.

Olight I1R 2 EOS specifications

NameI1R 2 EOS
Rated 4 / 5 based on 1493 user votes.

Flashlights let you navigate in the dark. They help you find supplies and signal for help.

Olight I1R 2 EOS / 4

Body, materials, weight, colors

Weight13 g
Length44 mm
Body diameter14.8 mm
Head diameter14.8 mm
Materialaluminium alloy with HAIII hard-anodized finish

An extremely lightweight handheld flashlight weighs 13 g. Consider the length of the flashlight, it should fit comfortably in your chosen way to carry it. The aluminium body of the I1R 2 EOS has a reputation for being durable and strong. The HAIII coating is often matte or textured. This flashlight offers many color options.

Olight I1R 2 EOS / 1

System, LED, lens, reflector

EmitterCSP LED
Color temperature4000 K

Color temperature is used to quantify the color appearance of light sources. The I1R 2 EOS's TIR lens is made of a single piece of transparent material.

Olight I1R 2 EOS / 6

Performance, flux, intensity, throw

Flux150 lm
Intensity400 cd
Throw40 m
CD/LM factor2.67

You mainly need a flashlight for basic tasks like finding keys or navigating in dimly lit areas, 150 lm can be enough. 400 cd can make things quite bright. It's enough for many everyday tasks. The throw distance is the farthest distance the flashlight can light an object. The cd/lm factor is the candela-to-lumen ratio. It shows how concentrated a light source's output is.

Olight I1R 2 EOS / 5

Software, user interface, modes

Modes2 modes
Mode memoryno
Ramping modeno

A flashlight's modes are different output settings or brightness levels.

Olight I1R 2 EOS / 3

Features, battery, protections

Batteryintegrated Li-Ion battery
Battery indicatorno
Charger portmicroUSB
Thermal regulationno

The Olight I1R 2 EOS flashlight is powered by integrated Li-Ion battery. The I1R 2 EOS flashlight can charge from a USB power source. LVP (Low Voltage Protection) is designed to protect the battery. This flashlight doesn't have built-in temperature control. The flashlight has an IPx8 rating. It can withstand being submerged in water beyond 1 meter for a prolonged period.

Olight I1R 2 EOS / 2

Accessories, package contents

Package contentskey ring

Official sitehttps://olightworld.com/

Conclusion, pros and cons

This Olight flashlight, like any other, has its strengths and weaknesses. Let's take a close look at both sides to understand this flashlight better. I share my thoughts on its standout features and the parts that might need improvement. Keep in mind, these are just my opinions, and you might have a different perspective.


  • lightweight
  • aluminium body
  • body color options
  • warm light
  • TIR lens
  • multiple modes
  • integrated battery
  • USB charger
  • low-voltage protection
  • waterproof


  • moderated performance
  • low intensity
  • no mode memory
  • no battery indicator
  • no thermal regulation
  • no auxiliary LEDs
  • non-magnetic


Olight I1R 2 EOS / I1R2EOS photo 1.
Olight I1R 2 EOS / I1R2EOS photo 2.
Olight I1R 2 EOS / I1R2EOS photo 3.
Olight I1R 2 EOS / I1R2EOS photo 4.
Olight I1R 2 EOS / I1R2EOS photo 5.
Olight I1R 2 EOS / I1R2EOS photo 6.
Olight I1R 2 EOS / I1R2EOS photo 7.
Olight I1R 2 EOS / I1R2EOS


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Updated: April 28, 2024

David Hagon
I love bushcraft and flashlights. I find joy in mastering wilderness survival skills and exploring the realm of illuminating gadgets. Bushcraft isn't just fun, it's a learning journey. I form a strong bond with nature. It's more than a hobby, it enriches me in practical and spiritual ways.