The TEC-S3 Glow Fob is a unique glow-in-the-dark keychain fob unlike anything you have ever seen. The internal glow pellet consists of a clear acrylic tube filled with a special glow powder and resin mixture. The pellet is mounted inside a protective stainless steel housing with a uniform bead blasted matte finish. When exposed to light, it will glow for hours; the longer the exposure time and the higher the light intensity, the longer and brighter it will glow. Glow times can last as long as 12 hours! Attach the TEC-S3 to your car keys or even a flashlight so you can always find them when the lights go out. Attach it to your jacket as a zipper pull so your friends can locate you inside a movie theater or outside at night! You can clip it to a backpack, camping gear or even to the pull chain on a ceiling fan; the uses are endless!