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- 4000 lumen searchlight packed into a tactical flashlight build
- 21700 battery power source provides long runtimes for extended periods of use
- Choose between outdoor and tactical UI configurations to match your needs
- Classic XT series dual-switch design for easy, single-handed operation
- Batteries Included?: Yes
- Rechargeable: Yes
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Description
Klarus XT21X
Innovative Powerhouse LED Flashlight
The Klarus XT21X stands out in the XT line for being the brightest of these tactical style lights. Housing a CREE XHP70.2 P2 LED, this light can reach output levels of up to 4000 Lumens! That's a light level more commonly seen in searchlights, making the XT21X a great choice for search and rescue operations in hard to traverse areas. This light also features the XT Series' trademark dual tail switch design that makes it easy to turn on, off and shuffle through modes singlehandedly. Additionally, an integrated side switch can also be used for a more casual lighting experience.
USB Rechargeable
The Klarus XT21X is an all inclusive package, including both USB charging cord and a powerful 5000mAh 21700 battery. This light can charge quickly, easily and safely at any computer or wall mounted USB outlet. The side switch features a charge indicator that lets you know when the light is charging, and when it turns green you're ready to roll.
| Turbo | High | Medium | Low | Moonlight | Strobe | SOS | |
| Brightness | 4,000 ↓ 1,600lumens | 1,200lumens | 400lumens | 100lumens | 5lumens | 4,000lumens | 100lumens |
|---|---|---|---|---|---|---|---|
| Runtime | 2 + 72minutes | 2.3hours | 6.5hours | 21hours | 200hours | 2.4hours | 63hours |
- Notable Features
- » Four brightness levels including a moonlight & 2 special modes
- » Dual-tail switch plus side switch activation for ease of use
- » USB rechargeable for quick charging anywhere
- » 3 level charge indicator displays charging & charged status
- » Lockout mode prevents accidental activation
- » Anti-slip knurling provides superior grip
Item Details
| Brand | Klarus |
| SKU | KLARUS-XT21X |
| Series | XT |
| Manufacturer Part Number | XT21X |
| Primary Material | Anodized Aluminum |
| Max Lumens (lm) | 4000 |
| Max Throw (m) | 316 |
| Rechargeable | Yes |
| Batteries Included? | Yes |
| Switch | Tail and Side Switches |
| Light Color | Cool White |
| Color Temperature | 6500K |
| Length | 6.34 in (161 mm) |
| Typical Uses | Collectors / Gift |
| In the Box | Batteries, Holster, Lanyard, Pocket Clip, Spare O-ring(s), USB Cable, User Manual |
Specifications
| Drop Resistance | 3.28 ft (1 m) |
| Switch | Tail and Side Switches |
| Primary Material | Anodized Aluminum |
Output Details
| Max Lumens | 4000 |
| Max Throw | 316 m (1036 ft) |
| Light Color | Cool White |
| Color Temperature | 6500K |
Power Details
| Batteries Included? | Yes |
| Rechargeable | Yes |
| Charge Style | In-Body Rechargeable |
| Charge Connector | Micro USB |
Unit Dimensions
| Length | 6.34 in (161 mm) |
| Head Diameter | 1.61 in (41 mm) |
| Body Diameter | 1.08 in (27 mm) |
| Weight | 5.57 oz (158 g) |
Packaging/Shipping Dimensions
| Length | 8 in |
| Width | 6 in |
| Height | 5 in |
| Shipping Weight | 0.5 lb |
Additional Details
| Packaging | Boxed |
| Warranty |
Klarus 5 Year Warranty Battery Junction Warranty |
| Return Policy | Return Policy |
| Glossary | Flashlight Glossary |
Bright Buys
- Trusted and reliable; consistently rated as a top customer pick for LED flashlights
- Superior 1,600mAh capacity means longer runtimes and less frequent battery changes
- Optimized for both high and low drain devices
- State-of-the-art automated production lines ensure the highest quality and safety protections
- Ideal for low-drain applications that require a primary battery to provide constant power
- 10-year shelf life - stock up for emergencies!
- The best choice for consistent power, great in low-drain devices like remotes
- Safe and reliable - capable of performing in high or low temperatures
- 225mAh capacity drives long runtimes for watches and electronics
- CR2032 coin cells packed with 3V of power
- Convenient 6-piece retail card provides backup batteries
- Easily replaceable primary lithium cells
- Top recommended battery for Apple AirTags
- 11-in-1 card sized tool fits in your wallet or on a keychain!
- Packed with handy tools including a screwdriver & 7 wrench settings
- Serrated saw and straight-edge knife for quick cutting jobs
- Can + bottle openers for campsite meals or end-of-shift relaxation
- Independent 4-slot charging for different batteries
- Touch screen control provides user-friendly operation
- 4 working modes for charging, testing batteries, and more
- Compatible with Li-ion, Ni-Cd, & NiMH batteries
- Quick Charge 3.0 technology enables fast and efficient device charging
- USB compatibility supports a wide range of electronic devices
- Compact adapter design makes it ideal for travel and everyday use
- Intelligent charging management helps optimize power delivery
- Universal cable to consolidate chargers for work, home, or EDC use
- USB-C, Micro-USB, and Lightning plugs for various electronics
- USB-C input with USB-A adapter for use with any USB power source
- 3.93ft long cord, allowing you to use your phone during recharging!
- Premium materials for durability and fast charge speeds
- Fits flashlights w/ diameter of 24-32mm & length of 130mm-170mm
- Great for EDCs, tactical lights, slim lights, & more!
- Durable and flexible nylon material keeps lights secure
- 33g weight won't drag you down!
- Portable powerhouse - emits a 1148ft beam from a 3.4in light!
- Strobe and SOS modes accessible for emergencies
- Dual-fuel power - swap in a CR123A when needed
- Strong magnetic tailcap for hands-free repair jobs
- USB-C port offers seamless recharging from anywhere!
- 3,000 lumens and a 250-meter throw - fierce illumination to light up your backyard
- Multiple output modes are accessible via easy side switch operation
- Strobe, SOS, and beacon modes offer distinct signaling capability
- High-capacity battery supports the light with a maximum 227-hour runtime



