The Nite Ize DomeLit Light illuminates a four-foot area with the push of a button, creating instant LED visibility wherever you hang, hook, wear, or stick it.Portable LED Area Light - package includes DomeLit LED Light and 1) adhesive hook & loop for attachment. 2) adjustable, removable strap with quick release buckle for hanging or wearing. Parabolic lens creates a flood beam that illuminates a 4 foot area. Bright Glow & Flash White LED provides flood illumination in two modes: Glow & Flash. Run Time Glow Mode: 20 hours. Run Time Flash Mode: 25 hours. Features two easily replaceable batteries (2 - 3v 2016 lithium batteries) - an extra set of batteries is also included! Weather resistant Simple push-button on/off operation Weight: 1.6 oz.