It comes with its own lithium battery, if it runs out, it can be charged via USB and can be used for a long time. Main features It is a moving fish with a sensor inside. When you touch it, the fish will move. It can make your cat more active and healthy Unique design Using 3D printing process, realistic fish-shaped design. Soft and cozy and perfectly suited for bat and carrying. FunnyToeless socks, bodysuit and fishtail have been added to catnip, easy to catch interesting for cat. MultifunctionalSoft and cozy and perfectly fit for bat and wear. The strong aromatic smell is a favorite of the cat. When you place them in direct sunlight, the fragrance will come back. Use scenarios Perfect for decorating your car, sofa, bed and so on to make your room more vivid. Specification Fish Shaped: Grass Carp, Salmon, Silver Dragon, Crucian Fish Material: Plush Fabric Length: 30cm Color: As picture shown Package Included: 1 x Fish Shaped 3D Simulation Toy (Collocation USB Data Cable + Battery + Catnip) Note Due to manual measurement, please allow slight deviation in measurement. Due to different display and lighting effects, the actual color of the item may be slightly different from the color displayed on the pictures.