Streamlight Stylus Pro LED Flashlight PenLight with Holster, Black The Stylus Pro is machined from solid aircraft-grade aluminum alloy with a MIL-Spec Type II anodized finish giving this flashlight excellent abrasion and corrosion resistance. The Stylus Pro has been drop test verified above the industry standard of six feet and extensively field tested. Super Bright White LED Runtime: 8 Hours Momentary or Constant On Switching