Beautiful appearance: high-end quality shell; touch screen; the transparent window for hydrogen production Humanized design: silent design; voice broadcast; sleep mode; convenient operation; portable handle Stable and reliable quality: SPE pure water electrolysis technology; hydrogen concentration 99.9%; multiple protections Powerful timing function: timing up to 10 hours; timing countdown A variety of models are available: hydrogen absorption/hydrogen-oxygen mixed; double suction/single-suction; multiple flow rates are available Intelligent identification and monitoring: tilt monitoring; TDS water quality monitoring; water shortage monitoring; machine condition monitoring