.75 Gallon Betta Kit, Ideal For Home, Dorm Room, Or Office Energy Efficient Led Lighting Displays 7 Colors; Brightly Illuminates Your Fish With Dazzling Colors That You Can Select Depe Requires 2 Aa Batteries (Not Included); Optional 4.5V Power Adapter (Ap45150T) Allows You To Operate Aquarium S Led Lights Fr Everything You Need For Starting A Betta Aquarium; Measures 3.25 X 9.50 X 13.75 Inches (Lxhxw)