The lightweight, water resistant UST Tight Light 1.0 headlamp produces a bright light when and where you need it - worn around your head, clipped to a cap, or attached to gear. The adjustable, elastic strap make a comfortable headband, and a handy clip provides additional options for attaching the light to a hat, dog collar, backpack, and more. The Tight Light 1.0 features three long-lasting, unbreakable LED bulbs that provide bright, clean light in all conditions. It has five light modes - High (30 lumens, up to 10-hour runtime), Low (5 lumens, up to 48 hours), Flashing SOS (up to 30 hours), Red (3 lumens, up to 30 hours), and Red SOS (up to 60 hours). Its powered by two CR2032 batteries (included). The light has an IPX6 water resistance rating (protected against storm water conditions from all directions). Weighing just 1 ounce (28 grams), it measures 1.25 x 1.25 x 1 inches (32 x 32 x 25 mm). Its backed by a manufacturers limited lifetime warranty.