PRODUST DESCRIPTION: Green Food-Grade Material. The Portable Health Water Bottle is made with the double layer fine environmental food-grade Silicon glass so it's Excellent quality contact, and Health. just 3 minutes can produce a cup of hydrogen abundant water. Using Professionally certified film, which allows water to be more easily absorb by your body and also contains minerals. Portable hydrogen abundant water anion provides more Health water . for making hydrogen-abundant water at anytime, anywhere. USB Rechargeable, Hydrogen machine capacity is 420ml glass. suggest 8 glass hydrogen water a day. Water Electrolysis can produce high hydrogen concentration up to 1500 ppb. 1.5L of water per day is equivalent to the antioxidant value of hundreds of Fruit and vegetables. Hydrogen-abundant water can reduce harmful self-free radicals, thereby reducing human aging and enhancing immunity. increases energy grade and slows down the process of aging. The generator suit for distilled water, purified water, MINERALs water and tap water, could adjust stomach, relieve constipation and improve gastrointestinal functioN, Hydrogen water Generator makes water molecules much smaller. Product capacity: 420ML Material: 304 stainless steel + glass colour: Silver Package Contents: 2 x Hydrogen Water Generator Bottle 2 x USB Cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.