Promar L.E.D. Glow Light Sticks are the green alternative to wasteful one-time use chemical light sticks. They can be used over and over again. L.E.D. Glow Light Sticks emit even a brighter light than the one-time use chemical sticks and suit a variety of applications from marking surface buoys to serving as a safety illuminator for other activities such a bicycling, jogging, hiking, paddling, float tubing and fishing. Dual mode: Flashing or continuous. Extra batteries included.