Types of Lighting Output: 4 general, 1 flashing (strobe)
- Low: 5 Lumens constant (220 hrs)
- Mid: 58 Lumens constant (16 hrs)
- High: 180 Lumens constant (5hrs 10min)
- Turbo: 468 Lumens constant (1hr 50min)
- · Digitally regulated output - maintains constant brightness
- · Reverse polarity protection, to protect from improper battery installation
- · Push button switch with momentary-on function
- · Made of durable aircraft-grade aluminum
- · Premium Type III hard-anodized anti-abrasive finish
- · Toughened ultra-clear glass lens with anti-reflective coatin
Flashlight Operation
Flashlight turning on/off:
Depress the tail button switch lightly to activate the light momentarily. Depress the tail button switch completely to turn on the light and lock it. Another complete depress can turn it off.
Mode selection:
A single depress on the side button switch to select the brightness levels in the order of Turbo -> Low -> Mid -> High. Depress and hold the side button switch to enter into the strobe mode, and vice versa.
The flashlight will memorize any brightness level when switched off except the strobe mode.

The TK21 flashlight packs a powerful light beam into a compact, 6 by 1.5-inch package. |
Please Note: The above-mentioned parameters (tested by Fenix in a lab using quality CR123A primary lithium batteries) are approximate and may vary between flashlights, batteries, and environments.
What's in the Box?
TK21 Flashlight, lanyard, spare O-rings, spare rubber switch boot, holster