The Coast EAL5 Emergency Stretch Light can be utilized in four ways, depending on your needs. Closed, use it as a handheld flashlight. Open, use as an area lantern. With the red lights activated, closed it's enabled for low vision situations and flashing it's a rescue beacon. Operating on 4 AAA batteries, it will last up to 40 hours. Backed by Coast's lifetime guarantee against defects in materials and workmanship.