5 1/2" overall. XPG2 LED with up to 130 lumen output. Black anodized 6061 aluminum casing with removable black finish stainless pocket clip. Uses two AAA batteries (included). 90 minute burn time per battery set. Lightweight and easy to carry. Weighs only 2 ounces. Has the feel of a writing instrument. Ideal for shirt or pants pocket carry.