Features: 1. Electromagnetic air pump: High quality Aluminum alloy, outstanding heat dissipation performance, surface phosphating treatment, electrostatic spraying, uniform color. No lubricant design, compressed air is purer. 2. Max air pressure & air volume: The powerful electromagnetic motor produces excellent air pressure and delivers a large amount of air to the six adjustable valve outlets. 100% copper outlet nozzle for long-lasting stable oxygen supply. 3. With standard air tubing: flexible and durable, won't become brittle or crack. Transparent and non-toxic, so it won't hurt your fish. Ideal for use with aquarium decorations or bubblers and many filters. 4. Wear-resistant and shockproof: The steel engine Cylinder Piston adopts New wear-resistant material, which is highly wear-resistant and completely energy-saving, economical. Rubber anti-vibration base can effectively prevent shock and buffer. 5. Best applications:Ideal to increase water circulation and oxygen levels in pond, aquarium, fish farms and hydroponic systems, create more stable environment for your fish & plants(it is not recommended for indoor room use becouse of the working sound ) Specifications: 1. Material: plastic & magnet 2. Voltage:220-240V 50Hz 3. Power: 25w 30w 35w 45w 55w 65w Caution: 1. We may send you a plug adapter(EU, US, AU, UK,etc) according to your country . If you need another type, please leave a message after ordering or contact us directly. 2. Please double comfirm your local voltage and frequency before you place the order.If not match,the pump would not work. 3. There might be performance tolerance becuase of the tolerance of your local voltage and frequency.