The TerraLUX LightStar80 Penlight is unique among LED penlights because it uses a high CRI (color rendering index) LED, which measures the ability of a light source to represent colors as they appear in natural light. A high CRI is useful when working with electrical systems involving multi-colored wires. The LightStar80 also features a rubber bite grip for hands-free use, comes with a pocket clip and two AAA batteries, and is available in standard gray and high-visibility orange. It has an 80 lumen output and a runtime of 5 hours.