Features 1. Deep noise reduction, nourishing without disturbing sleep, multiple noise reduction designs, and a silent design of around 45 decibels. 2. Small and beautiful design: Weighing only 1.88KG, it breaks the traditional bulky feeling and is light enough to make you scream, ready to take away at any time. 3. Simple operation, one click start, easy to operate, just plug in and solve complex operation problems. 4. 5-fold filtration system, refined filtration system, and more hygienic oxygen absorption. 5. Easy switching for atomization upgrade, versatile for multiple uses, with fine particles directly reaching patients, and better atomization effect than ordinary atomizers. (Standard accessories: silicone nasal oxygen tube x1, mask nebulizer cup x1, household power cord x1, car power cord x1, instruction manual x1) Specification Concentration: 40% Noise: 60dB (A) (measured at a distance of one meter) Function: Oxygen generation (automatic shutdown within 40 minutes), atomization Power supply: AC90-240V, DC12V 2A 25W Net weight of the host: 1.8 kg Host size: 29.5 x 21 x 7.8 cm Material: ABS Color: White Size: 39 x 33 x 13 cm Weight: 2656 g Package Include: 1x Mini Portable Oxygen Concentrator 1x Silicone nasal oxygen tube, 1x Mask nebulizer cup, 1x Household power cord 1x On-board power cord 1x Instruction manual