Brand new, unused. Ready to use once you add purified water. [Retail Price] ¥400,400 (tax included) Generates high-concentration hydrogen at 99.7%! Uses pure water or purified water for generation, making it safe and low-cost to use. Equipped with a 3-hour continuous generation mode, allowing you to enjoy long-term hydrogen inhalation while lying down, watching TV, etc. - Product Name: Hydrogen Gas Generator - Power Consumption: Measured value 8W〜10W - Gas Production: 30ml/min - Operating Temperature Range: 5°C〜30°C - Size: W250×D250×H290 - Weight: 3.2kg Thank you.