The NITECORE E4K is a compact powerhouse, redefining what’s possible in an everyday carry flashlight. Weighing just 2.82 ounces and under 5 inches in length, the E4K delivers a staggering 4,400 lumens of brightness with a beam distance of up to 230 yards. Despite its ultra-lightweight and portable size, it’s designed for heavy-duty use, comfortably fitting in hand or attaching easily to belts, vests, or pockets via its durable two-way metal clip. Constructed from aerospace-grade aluminum alloy with a military-grade hard-anodized finish, the E4K is both IP68 waterproof and impact-resistant up to 1 meter, making it a rugged companion for outdoor adventures, emergencies, or everyday utility.
At the core of the E4K are four independently controlled CREE XP-L2 V6 LEDs, enhanced by Nitecore’s Precision Digital Optics Technology (PDOT) and an optical system with a crystal coating for superior light output and beam clarity. The high-efficiency constant current circuit ensures stable performance, offering up to 700 hours of continuous runtime on low and up to 30 minutes of sustained output on turbo. The included high-capacity 5000mAh NL2150HPR 21700 Li-ion battery powers this performance and can be rapidly recharged via USB-C. While charging, LED indicators conveniently show charging progress—red while charging and green when full. A power indicator under the side switch also reveals real-time battery voltage and charge status.
Controlling the E4K is intuitive and versatile. The large side switch allows users to cycle through five brightness levels and three special modes—strobe, SOS, and beacon. The light features a memory function to retain your last-used mode and offers multiple shortcut functions for quick access: half-press for ultralow from off, full press and hold for instant turbo, or press and hold while on for momentary turbo or access to special modes. The strobe mode uses randomly changing frequencies for enhanced disorienting effects, ideal for emergency situations. The Advanced Temperature Regulation (ATR) system maintains optimal performance by dynamically adjusting output based on environmental conditions.
The E4K is more than just a flashlight—it’s a smart and rugged lighting tool built for those who demand maximum power in minimal form. Each unit includes a NITECORE E4K flashlight (with battery pre-installed), a USB-C charging cable, a holster, lanyard, two-way pocket clip, and a LumenTac organizer case for safe storage and transport. Whether you're camping, hiking, working late, or preparing for the unexpected, the NITECORE E4K ensures you’re never left in the dark.
