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Description
Portable Oxygen Concentrator NT-03 + Home Oxygen Concentrator 101W(Click here to get one or more extra batteries) US STOCK: Ships From California 3 5 Business Days Fast Shipping For US Address 5 7 Business Days For Canada Address We Do Not Deliver To PO Box Addresses. Three Different Charging OptionsAC Power Supply Home Office Hotel Indoor UseDC Power Supply Car UseExtra Battery Outdoor Use Product Features Easy to Carry The NT 03 weighs only 3. 1 pounds and has overall dimensions of 9. 25*3. 94*5. 55 (L*W*H)
(Click here to get one or more extra batteries)
US STOCK: Ships From California
3-5 Business Days Fast Shipping For US Address
5-7 Business Days For Canada Address
We Do Not Deliver To PO Box Addresses.
Three Different Charging Options
✅AC Power Supply - Home/Office/Hotel/Indoor Use
✅DC Power Supply- Car Use
✅Extra Battery- Outdoor Use
Product Features
Easy to Carry
The NT-03 weighs only 3.1 pounds and has overall dimensions of 9.25*3.94*5.55 (L*W*H) inches. It also comes with a shoulder bag for convenient carrying while you are out and about. The bag is designed with ergonomics in mind and has adjustable straps, which can be adjusted to fit your height and body type for a more comfortable carrying experience. This allows you to get supplemental oxygen whenever and wherever you need it.
Replaceable Battery
The battery of NT-03: (Click here to get one or more extra batteries)
Comes with the NT-03 portable oxygen concentrator
Battery Lasting: last for 1-3 hours
Standard battery pack capacity: 2500mAH 14.8V, the highest voltage is 16.8V
✅AC Power Supply - Home/Office/Hotel/Indoor Use
✅DC Power Supply- Car Use
✅Extra Battery- Outdoor Use
Product Features
Easy to Carry
The NT-03 weighs only 3.1 pounds and has overall dimensions of 9.25*3.94*5.55 (L*W*H) inches. It also comes with a shoulder bag for convenient carrying while you are out and about. The bag is designed with ergonomics in mind and has adjustable straps, which can be adjusted to fit your height and body type for a more comfortable carrying experience. This allows you to get supplemental oxygen whenever and wherever you need it.
Replaceable Battery
The NT-03 portable oxygen machine features a replaceable and rechargeable battery that frees you from the constraint of a power cable, and get supplemental oxygen while outdoors. With extra batteries, you can achieve an even longer use time. Charging the battery is also convenient, as you can set it separately without needing to connect it to the machine. This provides flexibility and freedom to your oxygen therapy regimen.
Easy to Operate
Easy to Operate
The NT-03 features a one-button operation, requiring no complicated settings. You can simply press the button to turn on the device and start using it. Additionally, the device utilizes UltraSense sensitive breathing detection technology, which can monitor the user's breathing status in real time and ensure that supplemental oxygen is delivered promptly when needed.
Free Setting of Running Time
Free Setting of Running Time
The NT-03's running time can be freely set, with four timing options available: 40 minutes, 60 minutes, 80 minutes, and 180 minutes. You can adjust the running time according to your needs.
The battery of NT-03: (Click here to get one or more extra batteries)
Comes with the NT-03 portable oxygen concentrator
Battery Lasting: last for 1-3 hours
Standard battery pack capacity: 2500mAH 14.8V, the highest voltage is 16.8V
Application:
1. Rejuvenate brain activity.
2. Oxygen is used for skin care.
3. Oxygen restores sub-health fatigue.
4. Reduce the harm of alcohol and cigarettes.
5. Softening and deodorizing.
6. Other related environmental and health information and products.
Specifications:
Model NT-03 :
Oxygen Flow: 3L/min stable flow (not adjustable)
Oxygen Concentration: stable 32.5±2.5% oxygen concentration
Oxygen production method: pressure swing adsorption separation method (PSA method)
Noise: ≤45 dB(A)
Item Weight: 3.1 Pounds (1.4KG)
Package Size: 8.07*3.75*5.11 inches (20.5*9.5*13cm)
Work rate: 30W
Input voltage: DC12V~16. 8V
Working time: 40 minutes, 60 minutes, 80 minutes, 180 minutes (adjustable)
NT-03 Components: (Click Here to Get NT-03 Accessories)
1X Portable oxygen concentrator
1X AC Adaptor
1X 2500 mAh battery
1X Car converter/ car adapter
1X Instruction manual (Check the online manual here)
1X Diagonal shoulder bag
1X Oxygen tube & nasal cannula
Description For Home Oxygen Concentrator 101W
Features:
- This home oxygen concentrator supplied continuously adjustable flow from 1L to 7L per minute, which is flexible to satisfy different types of customers
- The high-technology concentrator reduces the noise and keeps a quiet place for oxygen production.
- The oxygen machine is equipped with a molecular sieve, oxygen is purer and cleaner with high oxygen yield and strong stability.
- Pure copper oil-free air double cylinder compressor continues to provide you strong power, its powerful wind pressure significantly improves the heat dissipation performance of the concentrator with low energy consumption.
- Oxygen production and atomization can be used at the same time, and the oxygen concentration remains unchanged.
- The o2 concentrator has a large IMD color panel with intelligent control. You and your family can easy to operate the functions-flow adjustment, voice broadcast, and timer operation.
Specifications:
Power supply: 110V, 220V
Output power: 150VA
Oxygen concentration: 35%-90% (Adjustable by flow)
Oxygen flow: 1~7L/min
Operating mode: continuous oxygen flow
Working time: 24H/7D
Noise:≤50dB(A)
Net weight: 5.5kg
Outline size: 305x180x300mm
Safety system: Current overload protection. When high temperature of compressor, the oxygen machine will be shut down.
Electrical classification: Ⅱ
Package Includes:
1 set* Oxygenerator
1 roots *Power cord
1 set *Nasal oxygen tube
2 sets*Filter
2 sets*Fuse
1 cop*Instruction（check the online manual here）
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.0 ★★★★★
Based on 27 reviews
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Product Reviews
★★★★★ 5
Good for sitting on it daily. Not that soft as expected
Color: Dark, Color: Dark
I’ve been using this chair for a few days now and overall it’s pretty solid for a home office setup, especially for the price range. Assembly took me about 30–40 minutes alone and all the parts were labeled clearly. Nothing arrived damaged and the instructions were easy to follow, though attaching the backrest was a little awkward with one person.
Once assembled, the chair looks clean and professional. The PU leather feels smooth and the cushioning is definitely thicker than cheaper office chairs I’ve tried. It’s comfortable for working several hours at a time, although I wouldn’t describe it as super plush or “sink-in” soft. The seat has a firmer feel, which may actually be better for posture during long work sessions.
The ergonomic support is decent. The backrest follows the shape of your back fairly well and gives noticeable lumbar support compared to flat office chairs. I spend a lot of time at my desk and this chair helped reduce some lower back discomfort. The reclining and rocking feature is also nice for quick breaks between meetings or while watching videos. It doesn’t recline extremely far, but enough to relax a bit without feeling unstable.
One feature I ended up liking more than expected was the flip-up armrests. They make it easy to slide the chair completely under the desk and also give more room if you like sitting cross-legged occasionally. The chair rolls smoothly and feels stable even when leaning back.
A couple downsides though. The faux leather can get warm after extended sitting, especially in a warmer room. The mesh section helps airflow a little, but not enough to fully prevent heat buildup. Also, while the chair is comfortable, it doesn’t quite feel “premium executive” level in terms of materials. Some of the plastic components and armrests feel more mid-range than luxury.
Overall, I’d say it’s a good value office chair with solid comfort, decent back support, and practical features. Great for everyday work or study use, just keep expectations realistic if you’re looking for a super high-end executive chair feel.
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Reviewed in the United States on May 6, 2026
★★★★★ 5
Comfortable chair constructed with good quality materials
Color: Dark, Color: Dark
Having purchased several chairs from Amazon over the years, I would rank the Marsail Executive Office Chair Ergonomic Desk Chair as one of the better quality options I've received. Here is a breakdown of my experience:
Build Quality & Aesthetics
I was immediately impressed by the quality of the base. It is crafted from brushed metal and has a substantial, premium feel that sets it apart from cheaper plastic alternatives. Additionally, the pneumatic height adjuster was easy to install and operates very smoothly.
Comfort & Ergonomics
-- Padding: The padding is not quite as thick as I expected, but it has proven to be very comfortable to sit in so far. Sometimes I am in the chair as much as 10 hours per day, and the foam in the seat holds it's form all day.
-- Support: The chair does not include built-in lumbar support, so I am using a lumbar pillow. However, I actually find this preferable; it allows me to adjust the pillow to my exact needs or remove it entirely depending on how I'm feeling.
-- Head support and tilt: I like to work in an upright position, but I sometimes i like to lean back for a rest. The chair leans back just enough to allow me to rest my head, but not so much that I feel like it will tip over. The head support is subtle too - it doesn't hurt my neck or force me to rest in an awkward position.
Functionality
-- The mobility of this chair is excellent. The wheels are high-quality and roll very smoothly on my hardwood floors, which is often a pain point with other office furniture.
Final Verdict
Despite the thinner padding and lack of integrated lumbar support, the superior materials and smooth mechanics make this a decent value for the money. It’s a sturdy, well-made piece of furniture.
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Reviewed in the United States on April 12, 2026
★★★★★ 4
Good quality office chair with movable arms
Color: Dark, Color: Dark
This chair was relatively easy to put together. After unboxing and laying out all of the parts, my husband and I built it in 22 minutes. We noticed how the instructions have you put the tilt mechanism bracket on after putting the back and arms on. Another chair we built was the opposite, which made attaching it to the base actually easier. That way just made more sense.
This way, you put the back and seat together using the arms, then you attach the tilt mechanism to the bottom of the seat, but the seat is at an angle when you do this. Then you lift the whole chair and place it down onto the legs. I'm glad there were two of us to do that part. We also noticed one of the holes for screwing in the arm bracket was not lined in metal like the rest of them were. It still worked, though.
It does rock a bit back and forth. The height adjusting rod also locks the chair in place for when you don't want the chair to lean back. There is a knob underneath that allows you to loosen or tighten how much it moves when you lean back or rock.
The material is faux leather. It looks like real leather and feels pretty good. This makes it easy to clean. The arms can be raised level with the back of the chair to make it easy to slide out of the side of the chair. Overall this chair has a pretty classic look to it and is comfortable to sit in. It even has some lumbar support.
The way the back of the chair and the seat of the chair connect together leaves a little bit of a gap. Nothing major, but you could lose coins or keys through the gaps between the cushions. If you have a cat, this would be a great way for them to poke their paws through and say hello.
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Reviewed in the United States on May 20, 2026
★★★★★ 5
Very good chair, comfortable and high quality.
Color: Black
I had my doubts, yet after a couple months I really love this chair. Its a very good quality. Comfortable and sturdy. It allows for me to lean back too, which is a big plus! It looks really great and I am glad I purchased this chair. If you are looking, then just buy it because it is as good as it looks in the pictures.
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Reviewed in the United States on May 4, 2026
★★★★★ 5
Very nice work chair
Color: Khaki, Color: Khaki
I am happy, it’s easy to assemble, comfortable, height adjustable, good quality and nice looking. I would recommend it.
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Reviewed in the United States on June 5, 2026