Specifications: Name: Weakly alkaline water cup for hydrogen-oxygen separation Color: Ring waist, ring straight tube Material: high borosilicon Size :20.5 * 7 cm / 8.1 * 1.97 inches Product capacity: waist type 350ml straight cylinder 420ml 1. High quality material: The cup is made of single layer high temperature resistant borosilicate glass material, with excellent high temperature resistance, not easy to deformation or rupture, safe and reliable. 2. Hydrogen-rich Water cup: This cup is specially designed for the preparation of hydrogen-rich water, which can be electrolyzed in just three minutes to help provide more water, providing more nutrients and antioxidant functions to the body. 3. Modified hydrogen: Our hydrogen water bottles use advanced technology to make water molecules smaller so that they can be better absorbed by cell membranes. This helps to boost metabolism, improve sleep quality, fight inflammation and promote skin health in a natural way. 4. Weakly alkaline water cup: With weakly alkaline design, it helps to regulate the acid-base balance in the body, promote good health, and let you enjoy fresh water. 5. Multiple designs: This water cup has two styles of waist design and straight cylinder design, which can be selected according to personal preference Product characteristics Great as a gift: Use our hydrogen-rich water bottles as a healthy gift. Long-term drinking of hydrogen water helps reduce muscle soreness and body fatigue after exercise and is a great gift for active and health-conscious family and friends. Packing list: 1* hydrogen and oxygen separation weakly alkaline water cup 1* Instruction manual 1* Charging cable 1*3C charging head