USB-C RECHARGEABLE - Includes an upgraded 21700i battery, which runs for 1 hour on high and a max runtime of 18 hours on low. Recharge the P20i UV via the fast charge USB-C port. UV DUAL OUTPUT - The P20i UV has a 320mW UV beam, which illuminates fluorescence in materials, specifically designed for patrol inspection, forensic science as well as document examination and currency detection. STROBE READY - Simply press and hold the mode switch on the tail to enable the strobe mode at any time. Non-linear strobe patterns cause enhanced dizzying effects, highly effective for diffusing a tense situation. HIGH PERFORMANCE TACTICAL LIGHT - The Nitecore P20i UV emits up to 1800 lumens with a max throw of 368 yards. Designed with law enforcement and military personnel in mind, this torch is easy to operate with 4 brightness levels, UV output, non-linear strobe, and a strong glass-breaking bezel for emergencies.