The Olight M20 has been a top-tier tactical light since its inception. Since then, it has undergone a variety of upgrades and improvements that have maintained its spot at the top of its class. This newest remodeling of the M20S-X Warrior features a cutting-edge XM-L2 LED capable of producing up to 550 lumens. A tactical tail switch and "Cigar Grip" design allow for a variety of tactical holds for versatile usage with firearms. The tail switch is coupled with an easy-to-find side switch which cycles through modes with single presses and accesses the strobe with a press and hold (From on position). The tail switch can be half-pressed for momentary on or clicked in place for constant on. A double press brings the light immediately to high mode while a triple press activates the strobe from the off position. A specialized smooth reflector projects the beam up to 197 meters while maintaining healthy peripheral illumination. Olight"s world-famous toughness is maintained with a military standard anodized aluminum body and stainless steel components. Wide rectangular threads assure a tight and secure fit for each part and allow the light to withstand complete submersion in up to 1 meter of water. The M20S-X is powered by 2 x CR123A batteries or a single 18650 cell. The M20SX-L2 is available in either the standard or Deluxe Package. Deluxe Package includes a hard plastic case batteries, a holster, and a white diffuser. Features: Innovative tactical user interface and dual tail switches Battery polarity reverse protection Water resistant up to IPX7 Equipped with a double CR123A size battery magazine Rectangle threads, new pocket clip, as well as new position structure for cigar holder Lock-out function: press the tail switch and side switch simultaneously, the light will power off and then lock-out Standard Package Includes: 1 x Flashlight, 1 x Lanyard, 2 x Spare O-Rings, 1 x Battery Magazine, 1 x Silicon Rubber Boot (fluorescent) , Manual/Warranty Card D