Intelligent and portable oxygen machine for the household: the oxygen concentrator NT-04 is designed to fit into everyday life. It is easy to use and elegant, lighter and has a smaller volume. The built-in backlight shows a sense of sci-tech and lets you see the working status at a glance. Highly concentrated oxygen: Continuous and stable oxygen supply with adjustable flow from 1 to 7 l/min. The maximum concentration reaches 93±3%. Significantly improves your breathing and allows you to live a natural life at home. Equipped with two different sized masks (suitable for adults and children), one machine can be used twice. Delivers pure and clean oxygen: We guarantee that every breath is clean, as the oxygen is well cleaned and humidified by the imported molecular sieve with strong adsorption force and other 9 degrees of filtration before it is finally delivered to the users. Easy to use: easy for the elderly to use with large buttons and remote control function. Humidify oxygen automatically so you don't have to add water repeatedly; One-click SOS is convenient for protecting your loved ones. 42 dB low noise: you can work, study intensively and sleep peacefully without being disturbed, as the machine runs with a noise of less than 42 dB. The oil-free high-performance compressor supports 72 hours of continuous operation. › See more product details Model: Size: Color: