Specifications: Different from the traditional push-button pumping aeration pump, this is an inductive pumping aeration machine that can produce water when you reach out, allowing you to release your hands. Small round stones are used to filter most of the impurities in the water, and then the fine wire mesh is used to block them deeper, making the extracted water more clear. Instantly release oxygen to awaken the vitality of the fish, without fear of the decay of air volume caused by the depth of the water. In addition to aeration, you can also change the water, changing the water at any time to give the fish a clear water environment. Three LED bait lights are combined with the pumping function, so that when you mix bait at night, you can see at a glance how much water you add. Item Name: Aquarium Oxygen Pump Material: ABS Battery: 2100mAh(Included) Features: Oxygen Supply, with LED Light, Water Pumping Function Size: 12.5cm x 7cm x 3cm/4.92" x 2.76" x 1.18" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Aquarium Oxygen Pump