Note1. Due to manual measurement, there will be an error of 0-2 inches, please understand.2. Due to many factors such as the contrast or light of the computer screen, the actual color may be slightly different from the picture, please refer to the actual productWarmly Noted:If you receive a product defective or doesn't have an usb cord,please just feel free to contact us directly through the Amazon message box,and we will resend you it for free.Product Name: Hydrogen-rich water cupProduct size: high 223mm cup diameter 67mmCup material: borosilicate glassProduct weight: 0.65kgNumber of jobs: 12-15 times after full chargeWorking temperature: 0-60 degreesHydrogen concentration: 600-900PPBProduct capacity: 360MLRated voltage: 5VMaximum power: 4WFull charging time: 3-3.5 hoursElectrolysis time: 3 minutesFunction: HealthProduct Details:1) The built-in sealing ring is made of food grade material to prevent leakage.2) Feel good, one button to start, easy to operate. 3) The bottom soft rubber anti-slip bottom pad has a good anti-slip effect . 4) Round and smooth, no wounds, more comfortable when drinking water. 5) USB charging cycleNote: Please charge in the empty cup state.Prompt: 1. Please reserve 1cm space in the bottle (keep the water level 1cm lower than the bottle mouth). When producing hydrogen, the pressure difference between the inside and outside of the bottle after hydrogen production will cause the bottle cap to become larger. A little tightly opened.2.Do not use electrolyte-free water, such as purified water, distilled water, etc. Tap water needs to be boiled or filtered, and the temperature should not exceed 50 degrees