Low noise operation, even at night use will not disturb the family rest, enjoy the quiet oxygen therapy time.1-5L adjustable flow rate, to meet the demand for oxygen therapy in different situations, very practical. So it is very recommended to use this product.

One thing I was very pleasantly surprised by was the ultra-low noise design of this machine. Even when used on a quiet night, it does not disturb the rest and ensures a high quality sleeping and resting environment, making it an ideal choice for those who pursue a high quality of life.

For me, who is always on the go, the HCN-5B's long battery life is a highlight. A single charge can meet the needs of long-time use without the need for frequent recharging, which greatly enhances the convenience and freedom of use. I value this very much, and patients with battery requirements can choose this one.

The battery lasts 80-120 minutes, which is totally enough if you are out and about, or you can carry a spare battery and charge it with a charging cable.

There are big buttons on the large HD screen to operate, very concise and clear to get started, don't worry about not knowing how to operate, the steps are very simple.