Anaconda 30-1731 21 LED UV Blacklight Flashlight Quality water-resistant ultraviolet flashlight with 21 LED lights Long-lasting use (approximately 80,000 hours) Approximate size of flashlight: 4" X 1.25" X 1.25" Simple push-on/off button, compact size and attached wrist band make it easy to use and transport Good for a variety of applications, including lab experiments, science projects and classroom demonstrations