Reflective LED safety armband for nighttime activities. Provides visibility at dusk and nighttime activities, keeping you away from potential hazards. Features three lighting modes: fast flashing, slow flashing, and steady light. Ideal for outdoor activities such as running, jogging, walking the dog, camping, fishing, cycling, and hiking. It has an adjustable length ranging in circumference from 29 to 36 cm. Operates with 2 CR2032 batteries (included).