This HOC-08 1-9 L is adjustable, so your big sister can adjust the oxygen flow that suits her actual needs. The adjustable range of oxygen is very large, so I can say that it is very flexible, I am very satisfied with it, and it is very smooth to use.

The design of this product is really to my liking, the compact body design makes it easy to place in all corners of your home without taking up too much space, even in a small apartment. It fits just right at home.

The sound of this machine is really small and there is no noise when the machine is running. The oxygen concentrator is almost silent when it is running, so even if you put it in your bedroom, you can enjoy a quiet night without disturbing your family's rest, which is a blessing for those who suffer from poor sleep quality.

Adopting advanced filtration technology, it effectively removes impurities and particles from the air and outputs high-purity oxygen, making every breath feel like being in nature. Negative ion purification technology releases very pure oxygen, for patients to inhale pure oxygen is still good for the body.

The appearance of the design is simple and generous, both practical and aesthetic, although it is a home oxygen concentrator, but in fact, its weight is not as heavy as imagined, in the acceptable range, and in fact, this machine will not take up a lot of space, it is still worth buying.