Feature: 1. Micro‑electrolysis technology produces hydrogen, the higher the mineral content in water, the better the electrolysis effect and the higher hydrogen content. 2. Promote the stable combination of hydrogen and water, with high hydrogen concentration and good stability. 3. It only takes 3 minutes to quickly electrolyze, can electrolyze pure water, add hydrogen that is good for health, and remove harmful ozone and chlorine. 4. Hydrogen‑rich water can reduce toxic free radicals, and the hydrogen concentration ranges from 700 to 1000 ppm. 5. 380ml hydrogen-rich water cup, small and portable, with good airtightness, which can promote nutrient absorption. Specification: Item Type: Hydrogen Rich Water Bottle Material: Borosilicate Glass + PC + Silicone Sealing Ring + Stainless Steel Color: Blue Power Supply: USB Power Supply Capacity: 380ml Hydrogen Concentration Range: 700-1000ppm Water Temperature Requirement: 0-50℃ Voltage: DC 5V / 1A Built-In Battery Capacity: 3.7V 1000mAh Charging Time: 2-3 Hours Weight: Approx. 836g / 29.5oz Size: Approx. 25x7cm / 9.8x2.8in . Package List: 1 x Hydrogen Rich Water Bottle1 x USB Cable1 x Manual Note: 1. Please allow 0‑1 inch error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.3. The small white ball at the bottom plays a role of purifying water, which is harmless to the body and does not need to be dug out.4. Since a large amount of water is produced every day, the seller is reminded to re‑tighten the bottom of the cup after receiving the product to prevent water leakage.5. Do not clean the bottom of the cup when cleaning, otherwise the charging will stop.