Discounted bundle of the tactical flashlight Fenix TK21R and the aluminum tactical pen Fenix T5.

Discover the Fenix TK21R tactical flashlight, designed for those who demand absolute reliability and top performance. With an impressive luminous flux of up to 3600 lumens (ANSI) and a beam distance of up to 480 meters, it gives you a perfect overview in any situation. It is powered by a high-capacity 21700 6000 mAh Li-ion battery, which is included in the package and recharges directly in the flashlight via a modern USB-C port. The port is protected by a meticulously designed screw-on cover that guarantees resistance to water, dust, and dirt, even in extreme environments. The battery is ready to provide power for over 72 hours of continuous use. Thanks to its robust and waterproof design, this tactical flashlight is an ideal partner for demanding outdoor conditions, professional use, law enforcement, and hunting activities. Intuitive control is ensured by a dual tactical switch that allows for instant reaction in critical situations – whether you need to quickly activate the strobe for disorientation or immediately switch to full power. The head of the flashlight features a stainless steel strike bezel, which is also equipped with three tungsten tips. This makes the Fenix TK21R not only a powerful light source but also an effective tool for emergency glass breaking or effective self-defense.

All flashlight parameters (luminous flux, battery runtime, waterproofness, beam distance, and impact resistance) are measured in accordance with the ANSI/NEMA FL 1-2009 standard.

Fenix TK21R LED Flashlight Specifications

• Uses a powerful Luminus SFT-90 LED with a lifespan of 50,000 hours.
• Five output modes: burst 3600 lumens (2.5 hours) -> 1000 lumens (3.5 hours) -> 350 lumens (7.5 hours) -> 30 lumens (72.5 hours) -> Strobe 3000 lumens (strobe flashing with variable frequency).
• Parabolic aluminum reflector for a perfect light beam with a distance of 480 meters (58,000 cd).
• The runtime in Burst mode is the total time, including reduced output after the overheat protection is activated.
• Powered by one 21700 6000 mAh Li-ion battery (included in the package).
• Max. battery diameter 22,0 mm., max. battery length 77,0 mm.
• Electronics with digital power regulation and reverse polarity protection.
• Dual spring system - high flashlight durability when used on a weapon.
• Intelligent Overheat Protection.
• Dimensions: 15.35 cm (length) x 3.6 cm (head diameter) x 2.54 cm (body diameter).
• Weight: 221.4 grams including battery.
• Made from A6061-T6 aircraft-grade hard-anodized aluminum.
• Impact resistant to falls from a height of 1 meter.
• Trapezoidal threads are highly resistant to wear.
• The flashlight has a memory function and will always turn on in the last used mode (does not apply to strobe).
• Durable, scratch-resistant surface - Type III hard anodized.
• Waterproof and dustproof according to the IP68 standard (tested underwater at a depth of 2 meters for 30 minutes).
• Toughened ultra-clear glass lens with an anti-reflective coating.
• Dual tactical switch on the tail of the flashlight (momentary on/off function).
• Sturdy clip for secure and easy carrying (removable).
• The flashlight's design prevents it from slipping in your hand and rolling when placed on a surface.
• The flashlight comes with a Fenix ARB-L21-6000 battery, Fenix T5, USB-C charging cable, wrist lanyard, belt holster, and a spare O-ring.
• Optional accessories available for purchase: Fenix ALR-01 tactical ring, remote pressure switches AER-05 and AER-04 (without strobe, max output limited to 1200 lm), AOD-M white diffuser, AOT-04 white and red traffic wand.
• The flashlight is also compatible with the following accessories: ALG-16 M-LOK mount, ALG-15 quick-release rail mount, ALG-00 quick-release rail mount, metal magnetic barrel mount, plastic magnetic barrel mount, scope mount, metal scope mount, Fenix ALD-05 strap for helmet use, Fenix bike mount, ALP-20 holster.

Product Review

• The Fenix TK21R flashlight was given for testing to Richard from the Airsoft Vlog YouTube channel. In his video (the video is in Czech, but YouTube supports auto-translated subtitles), he tested the flashlight along with the AER-05 remote switch and the ALG-16 M-LOK mount in situations where it would normally be used: as a handheld flashlight and on both airsoft and real long guns. In all cases, the flashlight held its own. “As for standard use, I like that you have two separate buttons at the back, where you can immediately use both the strobe and standard lighting,” – the author evaluates in the video. He also appreciates the quality of the material, workmanship, weight, and last but not least, the IP68 waterproofness thanks to the smart design of the USB-C charging port cover.

Operating the Fenix TK21R Flashlight

From the factory, there may be an insulating cap on the battery inside the flashlight. Remove it from the battery before first use.

To turn on, press the larger tactical button located on the tail of the flashlight; for momentary activation, half-press the button. By pressing the adjacent mode switch, you can cycle through the output modes at any time during operation. To switch to strobe mode while the flashlight is on, press and hold the mode switch for about 0.5 seconds. To turn the flashlight on directly into strobe mode, press and hold the mode switch. The BURST mode (3600 lumens) can also be directly activated at any time by holding the main tactical button for 0.5 seconds.

Last Mode Memory - The flashlight has a memory and will always turn on in the last set mode, except for strobe.

Battery Replacement - Unscrew the tail cap of the flashlight and insert the battery with the positive pole facing inward. Then, fully tighten the tail cap again.

Charging - Loosen the protective nut below the flashlight's head to reveal the charging port and plug the USB-C charging cable into the flashlight's charging connector. After charging is complete, tighten the nut again. When using a powerful 9V/3A USB power source, a fully depleted battery will be charged in 1.5 hours; when using a 5V/3A USB power source, it will be charged in 2.5 hours. The flashlight cannot be used while charging. During charging, the indicator lights up red. After a full charge, it will turn green. In case of charging failure or if the battery is inserted incorrectly, the indicator will flash red or not light up at all.

Intelligent Overheat Protection - As the flashlight reaches a massive output of 3600 lumens, its temperature increases. If the temperature exceeds 55°C, the output will automatically be reduced. Once the temperature drops below 55°C, the output will automatically increase again.

Battery Level Indication - Each time the flashlight is turned on (except for strobe), the battery level indicator opposite the charging connector will light up for 3 seconds. If the indicator LED is solid green, the battery is charged to more than 85%. A flashing green light means 50-85% capacity. If it's solid red, it is charged to 25-50%. A flashing red light indicates that less than 25% of the battery capacity remains.

Low Battery Warning - The flashlight will gradually automatically switch to the lowest output mode. If it is already in the lowest mode, it will flash 3 times every five minutes.

Warning

• Only use high-quality 21700 rechargeable batteries with protective electronics.
• Do not shine on flammable objects from a close distance to avoid damaging them or causing a fire due to high temperature!
• Remove the battery or loosen the tail cap to prevent accidental activation during storage or transport in an enclosed environment.
• Keep this flashlight out of the reach of children and do not shine it directly into anyone's eyes!
• Insert batteries with the positive pole facing the head of the flashlight.
• If the protective rubber O-rings appear damaged after a long period of use, replace them. The rings should also be lubricated to prevent rubber erosion. Following these rules will ensure the flashlight is properly protected against water.
• If the flashlight flickers, fails to switch to higher output modes, or does not turn on, it may be for one of the following reasons:
  • The battery is low - charge or replace it.
  • The contacts inside the flashlight are dirty – clean them with a cotton swab dipped in alcohol.
  • The head, body, or tail of the flashlight is loose; tighten them.