Feature: 1. Oxygen pump kit with 1 air stone, 1 air hose (90‑100cm / 35.4‑39.4in), and 1 blue check valve. 2. Soft rubber foot pads reduce the vibration effect of machine operation and low noise. 3. Non‑toxic and harmless to your fish, providing uninterrupted bubbles and high‑quality oxygen supply. 4. Easy to install and use, and it can connect the air pump with the air pipe and the air stone. 5. High efficiency and energy saving, good oxygenation effect, suitable for fish tanks, aquariums, etc. Specification: Item Type: Aquarium Oxygen Pump Material: Plastic Weight: Approx. 158g / 5.6oz Product Size: Approx. 10.6x5cm / 4.2x2.0in Power: 2.5W Flow Rate: 1.2L/Min Air Pressure: 15kpa Purpose: Suitable for aquaculture and oxygenation in fish tanks. Package List: 1 x Oxygen Pump1 x Air Stone1 x Air Hose1 x Blue Check Valve Note: 1. Please allow 0‑2 cm error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.3. Ensure that the local voltage supply is consistent with the working voltage of the product.4. Do not use this product for purposes other than the specified purposes. If you use parts and accessories that are not the product provided by the manufacturer, it may cause damage to the product and person life safety. Do not use it.5. Make sure your hands are in a dry state when you turn on/off the power switch and insert/unplug the power plug.6. When installing or disassembling this product, you must first pull out the plug and cut off the power supply to ensure safety.7. If you have any questions about the installation or safety of this product, you can consult a qualified electrician.