BIENDAY Continus-Home use 1-7L/Min &Bag Oxygen Machine Portable Tube&Oxygen Generator-𝗐𝗂th 2 in 1 equipment con full Accessor 93% concentration-1S

Oxygen flow rate: 1-7L/min adjustable Operating mode: 72 hrs continuous work Operating noise: ≤42dB 30-93±% 42dB Whisper Quiet OperationYou may also like BIENDAY 𝒉𝒆𝒂𝒍𝒕𝒉care 3L/&Portable Oxygen Generator-Tube 33% Out Machine Pulse for Travel Use&C𝗈𝗆𝖾 𝗐𝗂th 3.3𝑙𝑏𝑠 Accessories.