Hydrogen-HHO Gas Inhalation Machine 'S' size HPL-S Commercial cum Individual Machine Can seat 2 person/ hour Continuous operation time : 4 hours The duration of continuous operation and cooling depends on external parameters like room temperature. For the machine to operate effectively, the room temperature should be between 20 and 22 degrees. Operability Simple design makes it easy for everyone to use. This machine has a safety device to prevent malfunction Long-Life Japanese craftsmanship and engineering enables it to last easily over a decade. This machine is fully automatic. Patented:Patent Number 5775456 in Japan 'S' Size Machine Specifications Click Here To Download Brochure