1. Energy-saving and power-saving, ultra-quiet. 2. Copper is used as motor material, with stable performance. 3. Multi-layer sound insulation material is used inside, and soft shock-proof foot pads are set on outside, with small vibration, keeping body stable and reducing vibration noise. 4. Magnetic suspension piston technology, large air volume, not easy to lose; relying on magnetic field to generate energy, combined with air cavity, creating strong air volume; enlarging air outlet, are uniform and natural, and oxygenation effect is continuous and stable. 5. The diverter adjusts air volume, and diverter valve design allows air to circulate more freely. It can be used for aquarium oxygenation, seafood oxygenation, etc. Equipped with air stone/air plate, check valve, large , stable, uniform and reliable. Name:Electromagnetic Air Pump Voltage:110V/60Hz Power:30W Air volume:30L/Min Size:115x90x60mm/4.52x3.54x2.55Inch Plug Type:US Plug, it applies to Canada, India, Mexico, Thailand, Taiwan, the , the Philippines and so on. Colour:Black Material:ABS Package Contents: 1 * aquarium pump 1 * short pipe 1 * manifold with 4 outlets 4 * check valves 2 * 2m pipes 4 * air stones Only above package content, other products are not included. Note: Light reflection and different displays may cause color of item in picture a little different from real thing. The measurement allowed error is +/- 1-3cm.