My first machine wasn't quite what I needed, but customer service was super helpful with an exchange for the Serene 5. The process was easy, and the new one works great - the big plus is its high oxygen concentration, which stays above 90%.
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This is the VARON Oxygen Concentrator Online Store
We are the official and the only website which represents VARON. Our brand is founded in 2021. Adhering to the concept of providing practical and preferential oxygen concentrators for more people with hypoxia, the brand continues to optimize products and has been committed to internationalizing our products and passing our ideas to the world. At present, VARON's main product is an oxygen concentrator, which is sold in many countries/regions including the United States. We are also looking for global cooperation, any potential partners can contact us.See more