MAYU produces a swirling vortex-aerating of your water producing ionized water. Water consists of hydrogen and oxygen atoms at its core.The ionized water is alkaline producing a refreshing taste which tastes slightly sweet.Studies show alkaline ionized water may lower risks of high blood sugar, blood pressure and waist circumference. Researchers found that consuming alkaline water has reduced gastrointestinal symptoms such as bloating,0 nausea, stomach pain, acid reflux and diarrhea. Other benefits are relief from chronic inflammation and a 3 year study found that drinking alkaline water may increase lifespan. The MAYU retails at$199. My gently used MAYU is $80.