model NT-05 I recently purchased the NT-05, and it works for me. Its compact and lightweight design makes it incredibly easy to carry, especially when I'm out walking my dog. It's a significant improvement over the bulky machines I've used before, offering convenience without any fatigue. Highly recommend for those seeking a portable solution!

I'm at loss on how to change the filter… I'm at loss on how to change the filter cotton in my NT-02, but after contact their customer service team, they promptly sent me a how-to video. They were both friendly and professional

I was impressed with the customer… I was impressed with the customer service team, they patiently asked me what I wanted and I told them it was for my mom who lives in Florida and has emphysema. Then they recommended a suitable machine to me and provided a good discount to ease my burden. Thank you for their help.

NT-02 Works Great NT-02 Works Great. Ordered mine and it arrived in five days flat. It's keeping my O2 levels at a solid 96%, making my breathing much easier. The replaceable batteries are a plus, giving me peace of mind for doctor visits and meetups with friends. Recommend it.

Great Product As a COVID survivor Great Product As a COVID survivor, I've come a long way with my recovery, relying on ventilators and oxygen supplementation post-hospitalization. Two years out, and I'm mostly back to myself, though I still need a little help at night. I'm really pleased with the NT-04 oxygen concentrator — it's been a reliable companion through my daily life. Now, I'm looking into getting a portable unit for travel. This device has truly supported my path to getting back to life as it was.