Fenix TK 21 Flashlight

•  Cree XM-L LED with a lifespan of 50,000 hours
•  Uses two 3V CR123A batteries (Lithium) or one 18650 rechargeable battery (Li-ion)
•  150mm (Length) x 25.4mm (Diameter) x 40mm (Head)
•  152.6-gram weight (excluding batteries)
•  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 coating

Notice: The above-mentioned parameters (tested in lab using quality CR123A primary lithium batteries) are approximate and may vary between flashlights, batteries, and environments.