This Seiko S-Series Glue Bottle is a high-quality ultraviolet adhesive designed specifically for setting mineral and sapphire watch crystals on metal cases. It comes in a 10ml bottle in black, providing enough glue for multiple applications. The glue is easy to use and sets quickly under ultraviolet UV light, ensuring a secure and long-lasting bond between the crystal and the case. It is ideal for watch repair and maintenance tasks and is compatible with a wide range of Seiko watch models.