High/Medium/Low/Strobe modes; 1000 Lumen on high mode; every day carry flashlight; 330 Meter beam distance Multi battery versatility; Streamlight 88064 and 88065 come with CR123A batteries but can use Streamlight's SL-B26 rechargeable system and batteries sold separately Tactical tail cap switch for momentary or constant on operation, three different user selectable programs and a pocket clip for convenience Light, extremely durable and abrasion resistant; TEN-TAP Programming to choose your preferred operating mode; Anti-roll head prevents it from rolling away when you set it down Aluminum housing with type II military spec and anodized finish; IP68 rated; dust-tight and waterproof to 2 Meters; Includes (2) CR123A lithium batteries, pocket clip, and holster