TTLife's website is really impressive TTLife's website is really impressive! It's very professional and offers a comfortable browsing experience. The product descriptions are very detailed, and I appreciate that they offer a 30-day return policy and reliable shipping services. I've subscribed to TTLife's website to stay updated on their products and promotions. Thank you!

No working phone number No working phone number. I paid for a machine and it is lost in the mail TTLIFE has done NOTHING to resolve the problem. They refused to return my money or ship another machine. TTLIFE blames the shipper yet they will not give me the name or phone number for them. RUN don't walk away from this company.

I love the flexibility my lightweight… I love the flexibility my lightweight concentrator gives me compared to trying to carry a heavy tank of oxygen on my back. Plus, the price was the best I found on the internet. Thanks for being there for me!

Customer service is non-existent Customer service is non-existent. Phone calls are not answered and it takes days to receive an email back. I need to return this machine and they offered me $60 to keep it and sell it to someone else..then when I refused they offered me $85.00 Shipping it back cost more than $200 then they said they would charge me $109.00 restocking fee. Don't purchase from this company. I will be filing a dispute with my card company

Great concedntrator - so lightweight and easy to take anywhere with you. I needed a concentrator that I could take with me on walks plus my automobile traveling. Lightweight and easy to handle. This NT-05 I purchased fit my budget, as for what I paid, I feel it has a lot to offer. Quiet, easy to use, affordable. I love it.