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Klarus XT21X 4000lm review. Is it worth it in 2023?

2019
Cree XHP70.2 LED
4000 lm output
24964 cd intensity
1 x 21700 Li-Ion battery

The Klarus XT21X (XT21X) released in 2019. It uses Cree XHP70.2 LED, SMO reflector and 1 x 21700 Li-Ion battery. The powerful emitter in this flashlight provides up to 4000 lm output, 24964 cd intensity, and a beam distance of 316 m.

The XT21X is an impressive flashlight that offers both power and reliability. Its robust build and outstanding illumination make it a versatile lighting instrument. This light has 5 modes of lighting. Since the XT21X flashlight automatically recalls the last used mode, there is no need to access higher brightness levels or additional features unless specifically required. The strobe function can be utilized as a self-defense tool, providing a non-lethal means to deter or disorient attackers This USB rechargeable flashlight is designed to be compact and lightweight, making them highly portable and easy to carry.

Table of contents:

Klarus XT21X (XT21X) specifications

BrandKlarus
NameXT21X
TypeXT21X
Rating
Rated 3/5 based on 1140 user votes.
Launch2019
Formflashlight

The presence of a flashlight can provide a sense of reassurance and confidence in unfamiliar or potentially dangerous environments.

Body

Weight158 g
Length161 mm
Body diameter27.5 mm
Head diameter41 mm
Materialaluminium alloy with HAIII hard-anodized finish
Colorsblack

The XT21X generally comfortable to hold for extended periods and easy to carry in pockets or bags. The length of a flashlight can affect how it feels in your hand and how you can grip and maneuver it. A longer flashlight may provide a more substantial grip, making it easier to hold and control, especially if you have larger hands. The aluminium bodies can be anodized, providing a protective layer and a wide range of color options for flashlight bodies. Anodizing enhances the corrosion resistance, hardness, and scratch resistance of the aluminum, while also allowing for a variety of attractive finishes.

Hard-Anodized Type III (HAIII) is a specific anodizing process that creates a thicker and harder oxide layer compared to regular anodizing. It involves subjecting the aluminum to a higher voltage and a sulfuric acid bath, resulting in a dense and durable coating. This flashlight features a captivating black color.

System

EmitterCree XHP70.2 LED
Color temperature6500 K
ReflectorSMO
Lenstoughtened AR coated glass
Switchelectronic side, mechanical rear, mode pedal rear

Cree is widely regarded as a reputable LED manufacturer and has a track record of delivering high-quality and innovative lighting solutions. Warm white light is generally considered more comfortable and less harsh on the eyes compared to cool white light. The XT21X features a smooth reflector (SMO). If long-range illumination and throw distance are the primary requirements, a flashlight with a smooth reflector may be more suitable.

The AR coating on the lens maximizes light transmission, making the flashlight more effective in darker environments. The XT21X uses multiple switches. Depending on the placement and design of the switches, a multiple switch configuration can allow for one-handed operation. This is particularly helpful in situations where you need to hold or manipulate objects with one hand while using the flashlight with the other hand.

The XT21X has electronic switch. The electronic switches may have a higher likelihood of standby drain compared to mechanical switches since they require a small amount of power for operation. The XT21X has mechanical switch. Mechanical switches often offer tactile feedback, allowing users to feel a distinct click or resistance when the switch is pressed. This feedback helps users confirm that the switch has been activated or deactivated, providing a reassuring sense of control and awareness. With a rear switch of XT21X flashlight, the operation of the flashlight is often straightforward and easy to grasp. A simple press or click of the rear switch turns the flashlight on or off, eliminating the need for complex button combinations or multi-step processes.

Performance

Flux4000 lm
Intensity24964 cd
Throw316 m
CD/LM factor6.24

With 4000 lm, the XT21X flashlight will provide an exceptionally bright and powerful beam of light. It can illuminate large areas, outdoor spaces, or even act as a temporary spotlight in certain situations. The XT21X flashlight with 24964 cd has an extended throw distance, allowing you to illuminate objects or areas at greater distances. This can be advantageous for outdoor activities, search and rescue operations, or scenarios where long-range visibility is required.

The throw distance refers to the maximum distance at which the flashlight can effectively illuminate an object or target. The stated throw distance typically indicates the point at which the brightness falls below a specified threshold, such as 0.25 lux. Flashlights with a higher cd/lm ratio typically excel in long-range throw and focused beam applications, while flashlights with a lower cd/lm ratio may provide a wider and more evenly distributed beam for closer-range illumination or general-purpose use.

Software

Modes5 modes
Mode memoryyes
Ramping modeno
Strobeyes
SOS/Beaconyes

Modes on a flashlight refer to different output settings or levels of brightness that can be selected to suit different needs and preferences. The XT21X has mode memory. Mode memory means that the flashlight will remember the mode you were using when the light was last turned off, and when you turn it on again. The strobe function on the XT21X flashlight is a feature that produces a rapid and repetitive flashing of light. It is designed to create a disorienting or attention-grabbing effect. The XT21X has an SOS signal mode. The SOS code consists of three short signals, followed by three long signals, and then three short signals again.

Features

Battery1 x 21700 Li-Ion battery
Battery indicatoryes
Charger portmicroUSB
LVPyes
Thermal regulationyes
ProtectionIPx8
AUX LEDsno
Magneticno

The power source of the XT21X flashlight is 1 x 21700 Li-Ion battery, providing reliable and long-lasting energy for optimal performance. Having a battery indicator on a flashlight is beneficial as it allows users to monitor the battery status and make informed decisions regarding recharging or replacing the battery. It helps prevent unexpected power failures during critical situations and ensures that the flashlight is ready for use when needed.

USB rechargeable flashlights have become increasingly popular in recent years due to their convenience and sustainability. When the XT21X flashlight detects that the voltage of the battery has dropped to a certain threshold, it automatically reduces or cuts off the power output to prevent further discharge. This helps to preserve the battery's capacity and prevent it from reaching a critically low voltage level.

The XT21X has thermal protection feature. The thermal protection mechanisms are designed to monitor and regulate the temperature of the flashlight during operation. This feature helps prevent overheating, which can be detrimental to the flashlight's performance, battery, and overall safety. The XT21X flashlight with IPx8 rating can withstand being submerged in water beyond 1 meter for a prolonged period, typically specified by the manufacturer.

Accessories

Package contents21700 battery
lanyard
microUSB cable
nylon holster
spare o-ring

The included battery is selected to meet the specific power requirements of the XT21X flashlight, ensuring reliable and efficient operation. The flashlight package is thoughtfully equipped with a holster, offering you a practical and secure storage solution for your flashlight. By securing the flashlight with a lanyard, you can free up your hands for other tasks while keeping the flashlight within reach. When using spare O-rings, it's important to follow the manufacturer's instructions and guidelines for proper installation.

The performance of the Klarus XT21X flashlight is measured according to the ANSI / NEMA FL1 Standard 30 seconds after switching the light on. The ANSI/NEMA FL1 2009 Standard is a set of flashlight performance guidelines.

The specifications above are based on the official data published by the manufacturer, but we also take user reviews into consideration. If you found an error or something lacking in the specifications above for the Klarus XT21X, then don’t hesite and signal the problem to us.

Klarus XT21X (XT21X) pictures

Klarus XT21X / XT21X photo
Klarus XT21X / XT21X photo
Klarus XT21X / XT21X photo
Klarus XT21X / XT21X photo
Klarus XT21X / XT21X photo
Klarus XT21X / XT21X

Klarus XT21X (XT21X) comparisons

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