Klarus Camp & Hike 1 x 21700 Cree XHP70.2 P2 LED Tactical Flashlight 4000 Lumens Black XT21X. Dual tail switch and side switch designed to meet all user needs. Micro-USB 2A fast charging convenient and fast. 1 x 5000mAh 21700 Li-ion battery included for long-lasting runtime. Tactical/Outdoor two settings design to meet all scenarios and lighting needs. Innovative ITS(Intelligent Temperature Protection System) technology monitors temperature and auto-adjusts output levels in real-time. Five lighting levels with optimal output for longer runtime and superior light output distribution.