Anself 500ml Portable Hydrogen Rich Water Bottle Ionizer Ion Maker Generator Transparent Glass Anti Aging Colorful Light Hydrogen rich water is easy to absorb and can help to boost your metabolism and reduce constipation to some extent. Made of high borosilicate glass and 304 stainless steel, high quality and safe to use. With a USB cable, it can be charged by a computer or a cell phone USB charger, convenient to use. Colorful light makes the working process much more pleasant and it will go out when electrolytic process finished. It only needs 6 minutes to produce a cup of hydrogen rich water which can be directly drunk.