The ProTac 2L-X is a 500 lumen light that features a tactical tail cap switch for momentary or constant on operation, and a pocket clip for convenience. The Ten-Tap programming allows you to choose one of three modes of operation: 1- high/strobe/low, 2- high only, 3- low/high. It is constructed of aluminum with an anodized finish, glass lens, anti-roll head, gasket sealed. Included are two CR123A lithium batteries, holster and wrist lanyard.