Klarus · In-Depth Breakdown
Klarus XT21X Pro
4,400 lumens · 336m throw · 21700 · IPX8 rated
FlashlightRatings Score: 84.5/100
Best for Flood
At a Glance
How It Scores
Our algorithm scores every flashlight across six profiles. Select a profile to see which metrics drive the result. How we score →
Overall score
Buyer trust, value, raw performance, and build quality.
Formula v1 · select a profile above · nested rows show what feeds each composite
Strengths & Trade-offs
Strengths
- At 4,400 lumens on turbo, this flashlight produces an enormous amount of light — enough to illuminate an entire backyard or trail with ease.
- Built-in USB-C charging eliminates the need for a separate charger. Just plug in with a standard cable — the same one you use for your phone.
- IPX8 submersion rating means this light can handle being fully submerged in water — a must-have for outdoor, tactical, and maritime applications.
- Impact-tested to 1.5 meters, this light is built to survive drops and rough handling in the field.
- Electronic lockout prevents accidental activation in a bag or pocket — no more dead batteries from phantom drain.
Trade-offs
- 172g puts this on the heavier side of pocket lights. Noticeable in a front pocket over extended carry.
- 153.0mm length is manageable but longer than compact EDC lights — may poke out of shallower pockets.
Use Case Analysis
Tactical & Law Enforcement
The Klarus XT21X Pro earns a 78.6/100 tactical score. Its 4,400-lumen output can temporarily disorient a subject and illuminate threats at distance. The strobe mode adds a disorienting tactical option.
Camping & Outdoors
For camping and trail use, the Klarus XT21X Pro offers adequate runtime on medium mode. Its IPX8 rating handles rain and splashes with ease.
Hardware & Build Quality
Power System
The Klarus XT21X Pro runs on 21700 batteries with usb-c recharging. The battery is user-replaceable.
Construction
Built from aluminum, the XT21X Pro weighs 172g and measures 153.0mm in length. The head diameter is 40.0mm. Impact resistance is rated at 1.5 meters.
Emitter
The LED emitter produces up to 4,400 lumens. The beam pattern is hybrid.
What Buyers Say
Based on 138 Amazon customer ratings.
A solid 4.4/5 average from 138 buyers indicates strong customer satisfaction.
Bottom Line
The Klarus XT21X Pro is an outstanding flashlight that earns high marks across the board. Its best fit is flood use, where it scores 84.5/100. At $109.95, it represents strong value for money.
Worth Comparing
Similar models by price or brand you should also consider.
As an Amazon Associate we earn from qualifying purchases. Pricing and availability can change quickly. Always use Check Price on Amazon for current details.