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 onoff operation Weight: 1.6 oz.