Small size and work great! Recommend to buy

The 10000 mAh lithium battery lasts about 2 hours at maximum 6 liters per minute flow. This portable oxygen concentrator still delivers 93 percent purity consistently. The 2.4 pound weight and 30 decibel noise are excellent. I bought an extra battery for longer outings. Overall very satisfied with this oxygen generator machine.

I returned to work needing continuous oxygen. This portable oxygen concentrator runs at 30 decibels which my cubicle neighbors cannot hear. The 95 percent purity at 4 liters per minute supports my 8 hour shift when plugged into AC power. The 2.4 pound weight is easy to carry to meetings. A professional solution.

At home I plug this portable oxygen concentrator into the wall outlet using AC power. When I need to move to another room the 10000 mAh lithium battery takes over seamlessly. The 93 percent oxygen concentration at 6 liters per minute never interrupts. The 2.4 pound weight makes it easy to carry anywhere in the house.

I walk two miles every morning with this portable oxygen concentrator. The 2.4 pound weight does not bounce or shift in the backpack. The 95 percent oxygen purity at 5 liters per minute prevents my exercise induced asthma. The 10000 mAh lithium battery has never died mid walk. Highly recommended for active patients.

The included backpack is comfortable and well padded. The DC car adapter works perfectly in my SUV. This portable oxygen concentrator delivers 93 percent high purity oxygen at 6 liters per minute. The 10000 mAh battery gives 3.5 hours at moderate flow. The 30 decibel noise is very low. Everything I needed in one box.

The buttons on this portable oxygen concentrator are large and responsive. The 1 to 6 liters per minute adjustment is simple. The 95 percent purity is clearly displayed. The 2.4 pound weight is easy for my 80 year old mother to lift. No prescription needed meant I could order it for her immediately.

I live in a studio apartment with limited space. This portable oxygen concentrator measures only 5.9 by 2.9 by 6.3 inches. The 2.4 pound weight means I can move it from room to room easily. The 30 decibel noise does not bother my neighbors. The 6 liters per minute flow is powerful.

Todo Espectacular!!!

I tested this portable oxygen concentrator at 7000 feet elevation. The 93 percent oxygen concentration remained stable at 5 liters per minute. The 10000 mAh lithium battery performed normally in cold weather. The 2.4 pound weight did not slow my hiking. The car adapter worked on mountain roads. Very impressed.

I avoided malls because walking tired me out. This lightweight 2.4 pounds portable oxygen concentrator fits in my shopping tote. The 95 percent purity at 4 liters per minute keeps my oxygen saturation above 90 percent. The 30 decibel noise is unnoticeable in stores. The battery lasts my whole trip.

Compared to other brands this portable oxygen concentrator is half the price. The 93 percent high purity oxygen at 6 liters per minute performs just as well. The 10000 mAh rechargeable lithium battery lasts 3 hours. The 1 year quality warranty gives me confidence. No prescription needed was the deciding factor.

My spouse complained about my old oxygen machine noise. This portable oxygen concentrator runs at 30 decibels which is barely audible. The 95 percent oxygen concentration at 5 liters per minute works all night. The 2.4 pound weight makes it easy to move to the bedside. Finally both of us sleep well.

After lung surgery I needed oxygen for three months. This portable oxygen concentrator required no prescription which sped up my recovery. The 93 percent purity at 6 liters per minute met all my needs. The 10000 mAh lithium battery allowed me to attend physical therapy. The backpack is comfortable.

The DC car adapter keeps this portable oxygen concentrator running for unlimited hours. I drove from California to Texas using only car power. The 95 percent oxygen purity at 4 liters per minute never dropped. The 2.4 pound unit sat safely on my passenger seat. Very convenient for travelers.

My prescription expired and my doctor was booked for weeks. This portable oxygen concentrator requires no prescription so I ordered it immediately. The 93 percent high purity oxygen at 5 liters per minute arrived in two days. The 10000 mAh battery works perfectly. A true lifesaver.

I bought an extra 10000 mAh lithium battery for this portable oxygen concentrator. Total 8 hours of runtime at 4 liters per minute. The 95 percent oxygen purity worked even at 5000 feet elevation. The 2.4 pound weight did not tire me on hikes. The ultra low noise preserved the quiet camping experience.

Chasing grandchildren requires constant oxygen. This 2.4 pounds portable oxygen concentrator allows me to run and play. The 6 liters per minute flow at 93 percent purity keeps my energy up. The backpack is comfortable for hours. The car adapter lets me drive them to parks. Life changing.

This portable oxygen concentrator runs 8 hours daily on AC power at home. The 93 percent oxygen concentration never fluctuates. When I go out the 10000 mAh lithium battery gives me 3 hours of freedom. The 30 decibel noise does not disturb my TV watching. Highly reliable.

My oxygen needs change throughout the day. This portable oxygen concentrator adjusts from 1 to 6 liters per minute easily. The 95 percent purity stays stable at every setting. The 2.4 pound weight is manageable for my 75 year old shoulders. No prescription needed was a blessing.

I can finally work in my yard again. This lightweight 2.4 pounds portable oxygen concentrator hangs on my back. The 93 percent high purity oxygen at 6 liters per minute prevents breathlessness. The 10000 mAh battery lasted my entire morning of weeding. The car charger keeps me going.

The 30 decibel ultra low working noise is truly amazing. This portable oxygen concentrator makes no distracting sounds. The 95 percent oxygen purity at 4 liters per minute supports my breathing during long sermons. The 2.4 pound weight and backpack make it discreet. Wonderful product.

The dimensions are only 5.9 by 2.9 by 6.3 inches. This portable oxygen concentrator fits under airplane seats easily. The 10000 mAh rechargeable lithium battery meets FAA requirements. The 93 percent purity at 5 liters per minute lasted my entire cross country flight. No issues with TSA.

Many portable units only go to 3 liters. This portable oxygen concentrator delivers true 6 liters per minute at 93 percent purity. The 2.4 pound body is still incredibly light. The 30 decibel ultra low noise allows conversation while using. The car adapter is a bonus. Very happy.

I was surprised that this portable oxygen concentrator requires no prescription. The 95 percent oxygen concentration at 4 liters per minute arrived within days. The 10000 mAh lithium battery lasts 3 hours at 5 liters. The 2.4 pound weight makes it my daily carry unit. Great value.