BESRTWE Continus-Travel use Bag Oxygen Machine Portable Tube&, Portable Travel Use Battery&3L/Min &33%

‌2500mAh battery recharged,&complete accessories small in lightweight, 3.3lbs, for travel use 30%-concentracion non-adjustableYou may also like BESRTWE Home Use &1L/90% Oxygen Tube Machine for Home, & 1-7L Adjusable 30%~90%-concentration Concentrator oxigeno 𝗐𝗂th full-sets Accessories.