Feature: 1. Simple appearance, small size, lightweight and easy to carry. 2. Safe and reliable, stable performance, strong gas capacity, widely used. 3. The product uses 2pcs AA replaceable batteries for power supply, and the battery endurance can hit more than 10 hours. 4. The upper and lower covers adopt snap‑type design to facilitate battery replacement. 5. Suitable for all kinds of aquarium poweroff emergency oxygen increasing and outdoor fishing or transport a small amount of live fisheries and seafood products oxygen increasing, widely used. Specification: Condition: 100% Brand New Item Type: Air Pump Material: ABS Color: As Pictures Shown Product Size: Approx. 7x6.4x2 cm/ 2.7x2.5x0.7 inBatteries: 2 x AA Batteries(not included) Working Voltage: DC 3V Rated Power: 0.5W Gas Flow Rate: ≥0.5L/min(80 cm/ 31.5 in)Instructions for use: 1. Gently open the clasp and open the cover of the product; 2. According to the correct polarity into two AA batteries, buckle up the cover; 3. Press the "ON/OFF" button on the panel to turn it ON or OFF; 4. Remove the battery if not used for a long time. . Package List: 1 x Air Pump 1 x Pipe1 x Air Stone Note: Batteries are not included in the product and you need to buy them yourself.