♥ MORE SILENT - Our air pump is just driven by a thin piezoelectric ceramic plate, totally different from traditional electromagnetic air pump, No EMI, No motor, No shaft, No other troublesome mechanisms, which makes it super compact, quieter, light weight and long service life. ♥ STABLE PERFORMANCE - Oxygen air pump is stable performance, is ideal for small and medium-sized fish tank plus oxygen. It is also perfectly suitable for using at all kinds of high-grade aquarium, aquaculture oxygenation or spout decoration. ♥ HIGH-EFFICIENCY - This air pump is very efficient in a fish tank up to 40 gal, with long service life, has the most power of Hpumps. Suitable for fish tanks contain 500MM Water Depth. ♥ PRACTICAL DESIGN AND EASY TO USE - Aquarium air pump is small and light weight, portable and space saving. Very easy to install, connecting air stone and air tube with pump outlet, then immerse air stone into tank. ♥ STRONG AIR STONE - Air pump with an air stone, producing a lot of bubbles which your betta loves (as do most fish), adding extra oxygen. A great mother's day gift.