StopShop Glow in The Dark Radium Keychain - Cross Key Chain

It is made of silicon/soft pvc. Size : Width 3 cm x Length including split ring 9.5 cm approx. Weight : 20 Grams. It is the keychain which lights up in the dark when charged or left in the light for sometime. 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!