The TK15-S2 LED Flashlight from Fenix is a 400-lumen multi-purpose light with a waterproof housing as well as four selectable brightness levels and a high-output strobe mode. This compact illuminator is less than 6 inches long and has a range of features common to most Fenix LED lights; including a digitally regulated power supply, reverse polarity protection, and a last-used memory circuit. Fenix further equips this high-powered light by adding an over-discharge protection circuit that prevents the lamp assembly from overheating. Fenix also backs this handheld illuminator with a Lifetime Warranty.
Complementing the advanced circuitry and variety of output modes, the TK15 has a rugged aerospace aluminum housing with knurled grips and a Type III anodized hard coat. The lightweight yet durable construction, anti-roll shape, and thumb-accessible mode selector switch below the lamp assembly equip the TK15 with the reliability and functionality needed for almost any recreational lighting task. For additional flexibility, this light can be powered by either one 18650 rechargeable battery or two CR123A batteries. For emergencies, the 400-lumen strobe is quickly engaged by holding the mode selector switch.