Nitecore P20 Precise 800 lm CREE XM-L2 T6 Tactical LED Flashlight, Black, Left/Right 800 Lumen max output with STROBE READY button, 3 operation modes, and 3 brightness levels Maximum runtime of up to 26 hours on 1x 18650 battery Takes 1x 18650 li-ion battery or 2x CR123A lithium primary batteries IPX-8 waterproof and submersible up to 2 meters, 1.5 meters impact resistant Dual switch tail cap designed for tactical use and easy operation