The TD15X is a variable-output flashlight that provides four mode of light output. It uses a super bright CREE XM-L T6 LED and a precision reflector to produce a consistently smooth beam at any level. By loosen and tighten the head to switch between four output level - lowest for longest runtime at 20 lumens, highest for maximum light at 580 lumens (1X18650), and strobe for tactical. Its pushbutton tailcap click switch provides secure, ergonomic activation control: press for momentary-on, click for constant-on. The TD15X's crenellated strike bezel and scalloped tailcap provide further defensive options should the need arise.