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Description
Nonin 9550 Onyx II Finger Pulse OximeterNonin Onyx II 9550 Finger Pulse Oximeter Military Tested & Certified The Nonin Onyx II finger pulse oximeter has been tested under the most rigorous circumstances. Clinically proven oxygen saturation and pulse rate readings, the Onyx II has received the US Army and US Military Airworthiness Certifications, allowing it to be used in helicopters. FEATURES: Quick Spot Checks: The Onyx II turns on and off quickly for easy spot checks Proven Accuracy:
Nonin Onyx® II 9550 Finger Pulse Oximeter
Military Tested & Certified
The Nonin Onyx® II finger pulse oximeter has been tested under the most rigorous circumstances. Clinically proven oxygen saturation and pulse rate readings, the Onyx® II has received the US Army and US Military Airworthiness Certifications, allowing it to be used in helicopters.
FEATURES:
- Quick Spot-Checks: The Onyx® II turns on and off quickly for easy spot-checks
- Proven Accuracy: Clinically proven accuracy in the widest range of patients and settings, including patients with dark skin color and low perfusion
- Efficient: Allows for 2500 spot-checks or 21 hours of continuous use
- Large Bright LED Display: SpO2 and pulse rate can be read from any angle, day or night
- Wide Range of Finger Sizes: Accommodates a wide range of finger thicknesses, from 0.3 - 1.0 inch (8 mm to 26 mm)
- Durable and Reliable: The Onyx® II 9550 has the US Army and US Air Force aeromedical certification for use in helicopters
- LANYARD NOT INCLUDED (Available separately)
SPECIFICATIONS:
- Self-Contained: No sensors or cables to tangle or lose
- Power Source: 2 x AAA batteries
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
4.2 ★★★★★
Based on 23 reviews
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Product Reviews
★★★★★ 5
The answer to calloused feet.
Color: Pink & Beige, Size: Medium/Large(fits size 8 to 11)
If you have dry callused soles, these are your answer. All my calluses left and my feet were very soft. They should not be walked in unless you are very, very careful as you will slip and fall. I stopped using them for a while and all my problem calluses are back, even when I use lotion at night. They tell you not to sleep in them, I don't know why. I do put these on at night and end up taking them off later as they're not comfortable to sleep in.
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Reviewed in the United States on April 28, 2026
★★★★★ 5
Good Product
Color: Pink & Beige, Size: Medium/Large(fits size 8 to 11)
These socks are good for moistening. Durability is awesome Fit true to size. Traction could be a little better. The sock are very comfortable
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Reviewed in the United States on April 23, 2026
★★★★★ 4
Slippery when wet!!!
Color: Pink & Beige, Size: Medium/Large(fits size 8 to 11)
“These moisturizing slippers are actually really comfortable and feel great on the feet. They’re soft, cozy, and do help moisturize while you wear them. I also think they’re a good value for the money. The only downside is that once your feet get moisturized, they can get slippery inside the slippers, so I wouldn’t recommend walking around too much in them. Better for relaxing and letting your feet soak up the moisture than for being up and moving around.”
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Reviewed in the United States on May 26, 2026
★★★★★ 5
Love them
Color: Pink & Beige, Size: Medium/Large(fits size 8 to 11)
I wear a size 11.5 in ladies shoe and these just barely fit. Butttt after I put lotion on my feet and slipped these on and left them on for about 30 mins. It left my feet really soft! They work great as intended. Would buy again
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Reviewed in the United States on January 31, 2026
★★★★★ 3
Effective but may be uncomfortable
Color: Pink & Beige, Size: Medium/Large(fits size 8 to 11)
I have eczema on my feet and use a prescription cream that I leave on overnight. I often have a problem sleeping in socks but the silicone feels cool on my feet. The only drawback I have is the opening of the socks feel very tight around my ankles making them uncomfortable on me. I wish the opening was a bit more flexible.
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Reviewed in the United States on September 20, 2025