Multicolor Switching: 6 color LEDs change automatically which can make your aquarium more colorful and promote fish growth. Air pump is not included. Good Design: Safety low voltage, energy saving, ideal for aquarium, fish tank, swimming pool, pond, etc High Quality: Made of quartz sand, High quality LED lamp beads, longer life. The effect: Create colorful bubbles for the aquarium and decorate your fish tank. Package: Air Bubble Stone with suction cups, air tube and adaptor. Size: 5.5*2cm. Number of shipments: 1 pcs.