Fenix TK41 L2 is a high-intensity multifunctional flashlight powered by AA batteries. The neck-mounted dual switch system can realize a fast selection between four different brightness levels and two various flashing functions. Featuring a max 900 lumens output and over ten days ultra long runtime, the light can meet your illuminating needs unconditionally. In the meanwhile, the unique design makes TK41 much more compact and lightweight. With the perfect combination of outstanding performance and delightful user experience, TK41 is the dependable partner when outdoor searching, caving or using as a spare light for automobiles, etc. • Cree XM-L2 LED with a max of 900 Lumens • User-friendly interface using a side mode switch button • Intelligent memory circuit • 4 brightness levels plus Strobe and SOS: 1. Turbo - 900 Luments - 2 hr. 45 min. 2. High - 365 Lumens - 8 hr. 15 min. 3. Mid - 120 Lumens - 27 hr. 4. Low - 15 Lumens - 240 hr. • Deep reflector for a powerful focused light with longer throw • Max 240 hour runtime • Rhombic knurling on the handle for a comfortable grip • Premium Type III hard-anodized anti-abrasive finish • Waterproof to IPX-8 Standard • Digitally regulated output - maintains constant brightness • Reverse polarity protection, to protect from improper battery installation • Toughened ultra-clear glass lens with anti-reflective coating • Powered by 8 x AA Batteries (Not Included) • Dimensions: 11.2" (Length) x 1.6" (Diameter) x 2.5" (Head) • Weight: 320.0-gram weight (without batteries)