【PREMIUM QUALITY】-Made of high quality material, which is non-toxic, safe and durable to use.High-efficiency permanent magnet DC motor as the driver without oil lubrication. It produces purer compressed air when connect to the storage batteries. 【PORTABLE AQUACULTURE AIR PUMP】-With stable-performance and large volume, great for aeration.Portable size and handle design for convenient to carry. 【GOOD DESIGN】-Low power consumption, this will be practical and environmental friendly.Easy setup and operation, safe and stable.