This handcrafted round keychain is made of real glass and glows in the dark after being exposed to sunlight or artificial light. No batteries needed – just charge it under any light source and enjoy the magical green glow. Elegant and functional, it's a stylish accessory for your keys, bag, or backpack. Diameter: 25 mm Weight: approx. 10 g Material: Glass, metal keyring Glow color: Green Charges in natural or artificial light Perfect as a unique gift, for nature lovers, night adventurers, or anyone who enjoys luminous design.