Below is the parameter:
Power: 90W

●Sound level: < 40db
●Concentration : 30%-90% (flow at 1L/min, the purity> 90%)
●AC/DC powered, without battery

●Adjustable oxygen flow 1-5L/min,
●Total working hours dispaly, time control function,
●Portable design with modern heartset type oxygen pipes
●With taking bag
●Car using power inverter
●Possibility using in car
●Net weight: 6kgs