ZDD Made of high borosilicate glass, safe to use. Easy to operate, one button to start work. Helps you get high concentration hydrogen water quickly within 3 minutes by electrolysis. (The concentration of hydrogen: 800-1300PPB) High purification of membrane, speed up the filtration, high efficiency, easy to drink at any time. Portable, easy to carry, great for office, travel and work etc. Features: Made of high borosilicate glass, safe to use. Helps you get high concentration hydrogen water quickly within 3 minutes by electrolysis. East to operate, one button to start work. High purification of membrane, speed up the filtration, high efficiency, easy to drink at any time. Portable, easy to carry, great for office, travel and work etc. Specifications: Item name: Hydrogen water bottle Material: Glass Color: silver Rated Voltage: 5V Power: 5W Capacity: 450ML Battery: Built-in rechargeable battery Electrolysis Temperature: 0-45 Size: About 20.5x7 cm Notes: 1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you 2. Please allow 1-3cm measuring deviation due to manual measurement.