Features： With time collect function: Display the total operation time. With timed power off function. Anion generating function can improve the alveolar ventilation function and increase the absorption rate. 48 hours of continuous electric supply, convenient for users to absorb O2 for a long time Cleaning reminder function Security System Circulating Cooling System Oxygen flowrate: 1L 90%±3%，2L 75%，3L 60%，4L 50%，5L 40%，6L 35% Range of application： Produce for personal or family healthcare and beauty care. Technical parameters： flow 1L/min con-centration: 90% O2 flow range: 1～ 6L/min Power suppy:110v/60HZ Noise: Average(Front side) 43dB(A); Whole unit 46dB(A) Net weight: 6.5kg Dimension: D28cm (11") x W19.2cm (7.55") x H30cm (11.81") Safety system: ●Current overload or loose Function timing,Multiple mute,LED screen,Negative ion Package Includes: 1* machine 1* Product use and technical manual 1* Nasal itching tubes 1* 2M tubes 5* Filter cotton 1 * certification card 1* Warranty card 1*inhalation headset About shipping: We will ship the item within 1-36 hours ,it will take 3-10 days to arrive at your place.  
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