Healthy Radon, a radon generator from Botanic Laboratory. Purchased in the summer of 2025 through a clinic in Tokyo. Used for about 3 months. It was used with care, so it's in like-new condition with no scratches. The original price was 600,000 yen, but since it's used, I'm offering it at this price. Accessories include the main unit and two couplers for connecting the mask and tube. However, for hygiene reasons, please prepare your own mask and tube. In photo 1, there appear to be indentations on the left and right sides of the front, but these are not dents; they are wood grain patterns. This is a high-value item, so please consider carefully before purchasing. ① You can take in over 1 million becquerels of radon at home. ② Simply plug it into an outlet and inhale; it's easy to carry. ③ Because you inhale directly, you can efficiently absorb radon into your body. ④ Maintenance-free. (The mineral that generates radon can be used semi-permanently) ⑤ Stylish design that won't look out of place in your room. Power supply: AC 100V 50-60Hz shared Materials: [Main unit] Steel plate (powder coating) / MDF board [Radon gas generation capsule] PVC pipe (radon ball/non-woven fabric inside) Radon gas generation concentration: Over 1 million becquerels (Bq/㎥) Radon gas generation rate: 416cc/min (50Hz) 500cc/min (60Hz) Main unit size: Height 290 x Width (max) 190 x Depth (max) 160 (mm) Total weight: Approximately 3kg ※ Continuous use is up to 12 hours. After 12 hours of use, let the main unit rest for a few hours. There are no health problems associated with continuous use. ※ Uses a silent motor, so it's quiet, and you hardly feel the air during use. Selling price: ¥605,000-