With advanced noise reduction technology, the HCN-5B is virtually silent in operation, even when used in quiet environments, so it won't disturb your rest or the rest of others, and you can enjoy peaceful breathing time.

This machine can release a very high concentration of oxygen, even up to the amount of medical-grade oxygen, so to speak. It can reach the level of home oxygen therapy, and at the same time, this product has great portability and is very convenient to go out and about.

One of the highlights of HCN-5B is its adjustable oxygen flow range from 1L/Min to 5L/Min, which can be freely adjusted according to individual's physical condition or environmental needs, ensuring that the optimal oxygen concentration can be obtained for each use, which is very user-friendly.

This HCN-5B 1L-5L/Min Continuous Flow Oxygen Concentrator is nothing short of a traveler's delight! Its compact and lightweight design allows me to carry it with ease. Whether it's a long-haul flight or an outdoor adventure, I can always enjoy a pure oxygen supply to keep me in top condition and make my trip more worry-free.

Don't worry about sleeping, the noise level of this product is very low and almost negligible, so you can use this product with confidence.