Name: Fenix TK17 Dual Switch Tactical Flashlight
Brand: Fenix
SKU: FX-TK17
Price: 104.95 USD
Availability: InStock

Fenix TK17 Tactical Flashlight in black and in khaki color

Fenix TK17 Tactical Flashlight held in a gloved hand with graphics detailing the features of its dual tail switch

Fenix TK17 Tactical Flashlight on concrete

Fenix TK17 Tactical Flashlight used by a security guard in a parking garage

A GIF showing the battery level indicator of the Fenix TK17 Tactical Flashlight

Fenix TK17 Tactical Flashlight with battery plugged in to charge

A GIF showing a police officer using the strobe mode of the Fenix TK17 Tactical Flashlight

A GIF showing the battery suspension feature of the Fenix TK17 Tactical Flashlight

Fenix TK17 Tactical Flashlight used on a trail at night

A series of photos showing the many uses of the Fenix TK17 Tactical Flashlight

Fenix TK17 Tactical Flashlight used to break glass

Several photos showing the details of the Fenix TK17 Tactical Flashlight body

Fenix TK17 Tactical Flashlight dropped onto stone

Fenix TK17 Tactical Flashlight held underwater

Technical parameters chart showing the outputs and runtimes of the Fenix TK17 Tactical Flashlight

A list of accessories compatible with the Fenix TK17 Tactical Flashlight

Fenix TK17 Tactical Flashlight in packaging with included accessories

A black Fenix TK17 Dual Switch Tactical Flashlight with a silver tip, shown from the side on a white background.

Fenix TK17 Tactical Flashlight as viewed from the right

Fenix TK17 Tactical Flashlight as viewed from the top

Fenix TK17 Tactical Flashlight as viewed from the bottom

Fenix TK17 Tactical Flashlight in khaki color as viewed from the top

Fenix TK17 Tactical Flashlight in khaki color

Fenix TK17 Tactical Flashlight in khaki color as viewed from below

Fenix TK17 Tactical Flashlight in khaki color as viewed from the rear

$104.95

Shipping calculated at checkout.

Color

Black

Ceramic Khaki

Quantity

In stock, ready to ship
Inventory on the way

Satisfaction guaranteed

Free shipping for orders over $25

Backed by the Fenix Limited Lifetime Warranty

[{"id":50830710866216,"title":"Black","option1":"Black","option2":null,"option3":null,"sku":"FX-TK17","requires_shipping":true,"taxable":true,"featured_image":{"id":49741064864040,"product_id":9628643524904,"position":18,"created_at":"2025-04-17T11:17:08-05:00","updated_at":"2025-10-24T12:27:14-05:00","alt":"A black Fenix TK17 Dual Switch Tactical Flashlight with a silver tip, shown from the side on a white background.","width":2400,"height":1800,"src":"\/\/fenix-store.com\/cdn\/shop\/files\/Fenix_TK17_Tactical_Flashlight_thumbnail.png?v=1761326834","variant_ids":[50830710866216]},"available":true,"name":"Fenix TK17 Dual Switch Tactical Flashlight - Black","public_title":"Black","options":["Black"],"price":10495,"weight":358,"compare_at_price":null,"inventory_management":"shopify","barcode":"6942870312002","featured_media":{"alt":"A black Fenix TK17 Dual Switch Tactical Flashlight with a silver tip, shown from the side on a white background.","id":41372896624936,"position":18,"preview_image":{"aspect_ratio":1.333,"height":1800,"width":2400,"src":"\/\/fenix-store.com\/cdn\/shop\/files\/Fenix_TK17_Tactical_Flashlight_thumbnail.png?v=1761326834"}},"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":50830710898984,"title":"Ceramic Khaki","option1":"Ceramic Khaki","option2":null,"option3":null,"sku":"FX-TK17-Khaki","requires_shipping":true,"taxable":true,"featured_image":{"id":52219537981736,"product_id":9628643524904,"position":23,"created_at":"2025-10-14T14:54:15-05:00","updated_at":"2025-10-16T11:41:26-05:00","alt":"Fenix TK17 Tactical Flashlight in khaki color","width":2400,"height":1800,"src":"\/\/fenix-store.com\/cdn\/shop\/files\/Fenix_TK17_Tactical_Flashlight_khaki_main.png?v=1760632886","variant_ids":[50830710898984]},"available":true,"name":"Fenix TK17 Dual Switch Tactical Flashlight - Ceramic Khaki","public_title":"Ceramic Khaki","options":["Ceramic Khaki"],"price":10495,"weight":358,"compare_at_price":null,"inventory_management":"shopify","barcode":"","featured_media":{"alt":"Fenix TK17 Tactical Flashlight in khaki color","id":42717296886056,"position":23,"preview_image":{"aspect_ratio":1.333,"height":1800,"width":2400,"src":"\/\/fenix-store.com\/cdn\/shop\/files\/Fenix_TK17_Tactical_Flashlight_khaki_main.png?v=1760632886"}},"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}}]

Fenix TK17 Dual Switch Tactical Flashlight is engineered for tactical excellence and everyday reliability. Delivering a blinding 3600 lumens of maximum output and an impressive 330-meter beam distance, this powerhouse is built to dominate darkness. The intuitive dual switch design allows for quick access to instant burst and strobe modes, giving you immediate lighting control when it matters most.

Built tough with A5051-T6 aluminum alloy, IP68 waterproof rating, and tungsten steel striking tips, the TK17 is drop-tested to 1 meter, making it ready for rugged conditions. The included ARB-L21-6000B USB-C rechargeable battery not only powers your flashlight but can also discharge to other devices, acting as a backup power bank in the field. A battery level indicator keeps you informed, while double springs provide strong battery suspension, perfect for absorbing recoil during weapon mounting. Compact, lightweight, and fiercely powerful, the TK17 is the tactical tool you’ll never want to be without.

Outputs

Burst: 3600 Lumens, 3.75 hours (cumulative), 1083 feet
High: 1000 Lumens, 3.83 hours, 558 feet
Med: 350 Lumens, 8 hours, 328 feet
Low: 30 Lumens, 60 hours, 98 feet
Strobe: 3000 Lumens

Details

3600 lumens maximum output
Instant burst
Instant strobe
Battery level indicator
Included ARB-L21-6000B battery is rechargeable USB-C input
The battery can also discharge to other devices
330-meter maximum beam distance
Tungsten steel striking tips
double springs for strong battery suspension, making it better at handling recoil when weapon mounting
IP68 rated waterproof
Made from light weight, high strength A5051-T6 aluminum alloy
Drop tested to 1 meter

Batteries

Included: Fenix ARB-L21-6000B USB-C Rechargeable 6000mAh battery
Compatible: Any Fenix 21700 battery

Size

Length: 5.85 inches
Head Diameter: 1.42 inches
Body Diameter: 1 inch
Weight: 6.96 ounces

Fenix TK17 Flashlight
Fenix ARB-L21-6000B Battery
USB-C to USB-C Cable
USB-A to USB-C Cable
Holster
Lanyard
Spare O-rings (Qty 2)
Fenix TK17 User Manual

Q: What kind of LED is used in TK17?

A: One CREE XHP50.3 HD with a lifespan of 50,000 hours.

Q: What is the color temperature of TK17?

A: Around 5700K.

Q: What is the operating voltage of TK17?

A: The operating voltage is 3.0V - 4.2 V.

Q: Is TK17 rechargeable? How long is the charging time?

A: Yes. The package comes with a Fenix ARB-L21-6000B battery that features a USB-C port. Unscrew the light tail to take out the battery, then connect the USB Type-C end of the charging cable to the battery to start charging. The normal charging time of the included Fenix ARB-L21-6000B battery is approximately 4 hours from depletion to fully charged with a 5 V/2 A charging adapter.

Q: How to prevent accidentally activating the TK17?

A: Turn off the light and unscrew the tail cap half a turn or remove the battery to prevent accidental activation.

Q: Why does the TK17 downshift to a lower mode after being used for a while and the higher mode cannot be selected?

A: There are two reasons:

1. Intelligent Overheat Protection

The flashlight will accumulate a lot of heat when used at high output levels for extended periods. When the light reaches a temperature of 60°C or above, the light will automatically step down a few lumens to reduce the temperature.

2. Low-voltage Warning

When the voltage level drops below the preset level, the flashlight is programmed to downshift to a lower brightness level until the Low mode is reached.

Q: Why does the TK17 happen to flicker?

A: The reasons that may cause the light to flicker, shine intermittently or even fail to illuminate:

1. Poor battery level. The flashlight blinks to remind users.

Solution: Recharge or replace the battery.

2. The contact or contact point of the battery or flashlight is dirty.

Solution: Clean the contact points with a cotton swab soaked in rubbing alcohol.

If the above methods don't work, please contact your authorized distributor.

Q: What kind of battery can be used in TK17?

A: It is recommended to use a Fenix ARB-L21-6000B battery or other batteries of the Fenix ARB-L21 series. Other batteries are not recommended. As an unmatched battery may cause the flashlight to fail to work normally.

Fenix TK17

Overall rating: 4.909091 / 5 from 11 reviews.

AI Generated Review Summary

Summary topics

Review topics: [].

Review highlights

Reviews

"Sturdy and super bright. reliable as always from Fenix"

— Mark (5/5)

Compact and powerful

"As an inspector I use my Fenix flashlights everyday. These flashlights are extremely durable and compact. The battery life is incredible and it's quick to recharge. The beam allows me to clearly see from one end of an attic to the other. Great product"

— Shaun L. (5/5)

Robust and versatile.

"First off, this light is my first matte textured light and it feels good in the hand and not to worry on loosing grip while holding. I am a fan of the dual tail switches which instant bust and with the front tungsten combo is great in a self defensecase. Also the light beam is centered prefect enough for spotting and lighting up an entire area with confidence. I have always loved the Fenix battery specifically for the longevity and length of each charge. I've used this light all day for my work shifts which is commonly 8-12 hours and the light will last me around 7-9 hours on/off and cycling through brightnesses and usually I keep it on the 2nd brightness and it is more than enough for my tasks. I am happy with this purchase and I have also recommended this light to friends in family in good faith of Fenix products!"

— Andres V. (5/5)

TK17 Bright - Adjustable - Better Battery

"The new TK17 is a mid compact flashlight that has easy access to change the modes, and delivers a very bright beam. I like the 5000 MAH-V2 giving longer run times."

— GREG P. (5/5)

Awesome Flashlight

"Simply the best flashlight I've ever owned. Love the huge battery."

— Billy S. (5/5)

Excellent and Powerfull!

"This is a very powerful light. The USB c charge port is directly on the battery with very useful charge indicators built in. Highly recommended and great price point."

— KHALIL F. (5/5)

Solid light with a few changes needed

"Very solid light. Buttons are responsive and the memory feature is nice. The ability to charge another device from the battery is a big plus. A couple things I don’t like…charging the battery you have to completely removed it ti charge. The light gets hot very fast when in the higher settings"

— Steve B. (4/5)

Excellent product

"The flashlight performance was as expected."

— John S. (5/5)

Durable

"Very usefull and reliable."

— Damien W. (5/5)

Very Nice Light!

"Very Nice, But My TK16 Seems to have a Longer Throw."

— Steve W. (5/5)

Fenix TK17 Dual Switch Tactical Flashlight