• High-quality material: Made of durable and safe synthetic resin, which does not pollute the water and maintains its color in both saltwater and freshwater. • Realistic visual experience: The design simulates the shape of a volcano, providing a natural and realistic effect that enhances the aesthetics of the aquarium. • Convenient design: Includes an oxygen tube that connects to the air stone inside the volcano, creating bubbles when connected to an air pump (not included). • Versatile uses: Ideal for aquariums, fish tanks, and as home decoration, creating unique currents and dazzling underwater scenes. • Easy to use: The kit includes a volcano, an air stone with integrated LED lights, an air hose, and a power adapter. It is recommended to soak the bubble machine for about an hour before use. • Specifications: Synthetic resin material, black color, approximate size of 15x10x6 cm (5.91x3.94x2.36 inches).