Condition: 100% brand new Item type: Oxygen Pump Material: ABS Color: As picture shown Size: Approx. 13.5x7.5x4cm/5.3x3x1.6in Weight: Approx. 166g Power Supply: 2 x D battery(not included) Working voltage: DC 3V Put the battery in, gently open the buckle, open the top cover of the product, and place the dry battery correctly according to the instructions. There is no oil pollution inside the air pump. Connect the tube, insert the plastic tube into the mouth of the spherical container, and then insert the other tightly into the mouth. Connect the battery, press the button to control the air outlet volume, the ball container should be placed in the water when in use. It is forbidden to put the air pump in water or wash water. Once there is water, shake the pump while turning it upside down. 1、Well?designed, simple appearance, small size, light weight, easy to carry. 2、It is safe and reliable, with stable performance, strong air volume and wide application. 3、The air pump clip can be fastened to the waist of the fishing tackle box. 4、Suitable for all kinds of aquarium's power outage emergency oxygenation and wild fishing or transportation of a small amount of seafood. 5、Professional manufacturing, stable performance and high reliability. 1 x Equipment body 1 x Tube 1 x Air stone