The NITECORE I4000R is one of the flashlights in the intelligent series. I4000R utilizes 4 CREE XP-L V6 LED with a max output of 4,000 lumens. Powered by a NITECORE intelligent 21700 battery while compatible with the popular CR123, the I4000R is rechargeable and enables a long runtime of 300 hours and a max throw of 205 meters. I4000R has 5 brightness levels and the strobe mode, available with multiple optional accessories. The state-of-the-art design and the most advanced technology Integrated with a single tube make it the ultimate choice to meet the outdoor and tactical needs.