1. Green Food-Grade Material. Product capacity: 420ML.These Portable Healthy Water Bottle is made with these double layer fine eco-friendly food-grade Silicon glass so it's super tough, durable and healthy.Only 3 minutes can produce a cup of hydrogen rich water. 2. Using world classes SPE/PEM film, which allows water to be more easily absorb by your body and also contains minerals. Portable hydrogen rich water ionizer provides more healthy water . Perfect for making hydrogen-rich water at anytime, anywhere. 3. USB Rechargeable, Hydrogen machine capacity is 420ml High-quality glass. suggest 8 glass hydrogen water a day. Water Electrolysis can produce high hydrogen concentration up to 1500 ppb. 4. 1.5L of water per day is equivalent to these antioxidant value of hundreds of fruits and vegetables. Hydrogen-rich water can reduce self-free radicals, thereby reducing human aging and enhancing immunity. increases energy levels and slows down these process of aging. 5. These generator suit for distilled water, purified water, mineral water and tap water, could regulate stomach, relieve constipation and improve gastrointestinal function, Hydrogen water Generator makes water molecules much smaller. Colour:silver Material:Stainless steel Package Contents: 2 x hydrogen water 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.