The Fenix TK Series is one of Fenix's most powerful line of LEDs. These lights are suitable for outdoor adventures like camping, hunting, exploring, search and rescue, and all other extreme adventures. Each model is made of durable aircraft-grade aluminum and features an anti-roll, slip-resistant body design. Other TK light features include a premium hard-anodized anti-abrasive finish, toughened ultra-clear, anti-reflective glass lens, and push-button tail cap switch with momentary-on function. TK Series lights follow the IPX-8 standard in waterproofing and offers digitally regulated outputs to maintain constant brightness.