Hydrogen Inhaler High-Concentration Hydrogen Generating Inhaler Approximately 150ml of hydrogen per minute H2F150 FRESCA Made in Japan FRESCA Made in Japan Hydrogen Gas Inhaler Compact Size Gift from a friend Apparently purchased for around 200,000 yen. I was supposed to be shown how to use it, but I kept forgetting. Since I don't plan to use it anymore, I'm putting it up for sale. It powers on, but I don't know how to use it, so I don't know if it's working properly. Please consider it as junk.