ENHANCE NightLUX BND Safety LED Nighttime Running Band with Solid Beam and Flashing Red Color Modes - Perfect for Dog Walking , Children Safety , Neighborhood Watch and More The ENHANCE NightLUX BND LED Nighttime Band offers ultra high visibility from dusk until dawn. Perfect for Dog Walking , Children Safety , Neighborhood Watch and More Features two LED lighting modes: Solid Beam and Flashing Stretches to fit arms, legs and more from 10.5 inches to 20 inches wide Uses two CR2032 Batteries for power. Each package includes a total of 4 batteries Backed by a 3 Year Manufacturers Warranty