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AccuMed CMS-50D1 Fingertip Pulse Oximeter Blood Oxygen Sensor SpO2 for Sports and Aviation. Portable and Lightweight with LED Display, 2 AAA Batteries, Lanyard and Travel Case (White)
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Purchase options and add-ons
Brand | AccuMed |
Color | White |
Measuring Range | 70% - 100% SpO2 |
Number of Batteries | 2 AAA batteries required. |
Model Name | CMS-50D1 |
About this item
- ACCURATE OXYGEN SATURATION AND PULSE RATE READINGS IN ONE DEVICE: The Fingertip Pulse Oximeter fits all finger sizes from kids above four years old to adults as it measures the level of oxygen in the blood and reads the pulse rate in just eight to ten seconds. It is crucial to use the device in a stationary position and not while in motion for precise readings.
- LOW POWER CONSUMPTION: Equipped with two AAA batteries, the oximeter automatically powers off when not in use and delivers up to 20 continuous hours of battery life.
- PORTABLE AND LIGHTWEIGHT: Weighing only 50 grams, every AccuMed oximeter comes in a convenient travel case that protects it from scratches when carried on its own or inside your gym bag or backpack. Attach the included lanyard to the case or directly to the oximeter for easy reach anytime.
- ROTATING, CRYSTAL CLEAR LED DISPLAY: Read your oxygen saturation level and pulse rate results with remarkable clarity in portrait or landscape formats with auto rotation that detects your hand movement in the CMS50D1 models.
- DESIGNED FOR HOME USE, EXERCISE OR TRAVEL: While the AccuMed Fingertip Pulse Oximeter is handy for detecting vital signs, it is not intended for medical use but rather for situations where you need to know your oxygen level before and after your workout or sports such as running, hiking or cycling, or while traveling in an aircraft.
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Product Description

YOUR VITAL SIGNS AT YOUR FINGERTIPS

QUICK AND EASY OPERATION IN THREE SIMPLE STEPS
- Remove the back cover and install the two AAA batteries included in the box.
- Insert your finger by aligning it with the red light and wait for the oximeter to switch on.
- Read the results in eight to ten seconds.
The AccuMed Pulse Oximeter is a painless and non-invasive device that shows you:
- OXYGEN SATURATION or SpO2 LEVEL: Shows the percentage of how much hemoglobin in your blood is carrying oxygen, with normal levels at 95% or greater
- PULSE RATE: Provides the number of heartbeats per minute
- PULSE INTENSITY: Displayed as a bar graph
- PULSE WAVE: Shows the strength of your pulse in wave form
LOW POWER CONSUMPTION
Equipped with two AAA batteries, the oximeter automatically powers off after five seconds of inactivity and delivers up to 32 continuous hours of battery life.

PORTABLE AND LIGHTWEIGHT DESIGN
Weighing only 50 grams with batteries included, every AccuMed Oximeter comes with a convenient travel case that protects it from scratches as you carry it on its own or inside your gym bag, backpack or luggage. Attach the included lanyard to the case or directly to the oximeter for easy access anytime.
ROTATING, CRYSTAL CLEAR LED DISPLAY (Available in AC-CMS50D and AC-CMS50D1 models)
Read your oxygen saturation level and pulse rate results with remarkable clarity in portrait or landscape formats with auto rotation that detects your hand movement.
IS A PULSE OXIMETER FOR YOU?
While a Pulse Oximeter is not intended for medical use, it is the simplest and most convenient way to detect and monitor vital signs before and after any strenuous activity such as a workout at home or in the gym -- or sports such as running, cycling, basketball or tennis. People who work in aviation or travelers who fly frequently need an oximeter to know if their oxygen level is dropping or normal.
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AccuMed CMS-50D1 Fingertip Pulse Oximeter Blood Oxygen Sensor SpO2
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AccuMed CMS-50DL Fingertip Pulse Oximeter Blood Oxygen Sensor SpO2
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AccuMed FS10E Fingertip Pulse Oximeter Blood Oxygen Sensor SpO2
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AccuMed CMS-50DL Fingertip Pulse Oximeter Blood Oxygen Sensor SpO2
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AccuMed CMS-50D1 Fingertip Pulse Oximeter Blood Oxygen Sensor SpO2
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AccuMed CMS-50D1 Fingertip Pulse Oximeter Blood Oxygen Sensor SpO2
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Customer Reviews |
4.6 out of 5 stars 9,250
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4.3 out of 5 stars 409
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4.5 out of 5 stars 658
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4.6 out of 5 stars 762
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Price | $27.99$27.99 | — no data | — no data | $19.99$19.99 | $27.99$27.99 | $34.99$34.99 |
Model | AC-CMS50D1-WHITE | AC-CMS50DL-BLACK | AC-FS10E-WHITE | AC-CMS50DL-WHITE | AC-CMS50D1-BLUE | AC-CMS50D1-BLACK |
Display | OLED | OLED | OLED | OLED | OLED | OLED |
Screen Information | Shows SpO2, Pulse Rate, and Pulse Intensity | Shows SpO2, Pulse Rate, and Pulse Intensity | Shows SpO2, Pulse Rate, and Pulse Intensity | Shows SpO2, Pulse Rate, and Pulse Intensity | Shows SpO2, Pulse Rate, and Pulse Intensity | Shows SpO2, Pulse Rate, and Pulse Intensity |
Battery Life | 20 hrs | 24 hrs | 24 hrs | 24 hrs | 20 hrs | 20 hrs |
Recommended Finger Size | Kids 4y/o and older, Adults | Kids 4y/o and older, Adults | Kids 4y/o and older, Adults | Kids 4y/o and older, Adults | Kids 4y/o and older, Adults | Kids 4y/o and older, Adults |
Adjustable Screen Brightness | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
Auto Power Off | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
Color | White | Black | White | White | Blue | Black |
What's Included: | Pulse Oximeter, 2 AAA Batteries, Lanyard, Travel Case | Pulse Oximeter, 2 AAA Batteries, Lanyard, Travel Case, Silicone Cove | Pulse Oximeter, 2 AAA Batteries, Lanyard | Pulse Oximeter, 2 AAA Batteries, Lanyard, Travel Case, Silicone Cove | 2 AAA Batteries, Lanyard, Travel Case | 2 AAA Batteries, Lanyard, Travel Case |
Uses | Home Use, Exercise, Travel, Hiking | Home Use, Exercise, Travel, Hiking | Home Use, Exercise, Travel, Hiking | Home Use, Exercise, Travel, Hiking | Home Use, Exercise, Travel, Hiking | Home Use, Exercise, Travel, Hiking |
Product details
- Is Discontinued By Manufacturer : No
- Product Dimensions : 3 x 1 x 2 inches; 1.76 ounces
- Item model number : CMS-50D1-White
- Batteries : 2 AAA batteries required.
- Date First Available : May 19, 2015
- Manufacturer : AccuMed
- ASIN : B00XWP7BIY
- Best Sellers Rank: #26,988 in Health & Household (See Top 100 in Health & Household)
- Customer Reviews:
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This Item ![]() AccuMed CMS-50D1 Fingertip Pulse Oximeter Blood Oxygen Sensor SpO2 for Sports and Aviation. Portable and Lightweight with LED Display, 2 AAA Batteries, Lanyard and Travel Case (White) | Recommendations | |||||
Try again! Added to Cart Add to cart | Try again! Added to Cart Add to cart | Try again! Added to Cart Add to cart | Try again! Added to Cart Add to cart | Try again! Added to Cart Add to cart | Try again! Added to Cart Add to cart | |
Price | $27.99$27.99 | $21.95$21.95 | $24.45$24.45 | $22.99$22.99 | -40% $14.99$14.99 List: $24.99 | $22.15$22.15 |
Price Per Unit | $27.99 / Count | $21.95 / Count | $24.45 / Count | $22.99 / Count | — | — |
Delivery | Get it as soon as Saturday, Mar 29 | Get it as soon as Saturday, Mar 29 | Get it as soon as Saturday, Mar 29 | Get it as soon as Saturday, Mar 29 | Get it as soon as Saturday, Mar 29 | Get it as soon as Saturday, Mar 29 |
Customer Ratings | ||||||
Sold By | Amcrest Direct | mibest | Gurin Products, LLC | Beyond Med Shop | Amazon.com | mibest |
measurement accuracy | — | +/-2% | — | +/-2% | — | +/-2% |
batteries included | ✗ | ✓ | ✓ | ✓ | ✓ | ✓ |
battery average life | 20 hours | 40 hours | 30 hours | 40 hours | — | 40 hours |
battery quantity | 2 aaa | 2 aaa, 2 aaa, 2 aaa, 2 aa | 2 aaa | 2 aaa | 2 aaa | 2 aaa |
Videos
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We've all learned the importance of this device!
Tom Hornstein
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Unbox and See What Impressed Me About This Oximeter!
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Accurate, fast and reliable! Fancy Looking Design
🔥 Sergey Kasimov
Important information
Legal Disclaimer
This pulse oximeter is not intended for medical use and is designed for sports and aviation use only.
Statements regarding dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease or health condition.
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Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers find the blood oxygen monitor easy to use and read. They find it simple and convenient to track their oxygen levels and pulse. The display is bright and allows them to easily see their pulse and oxygen levels. Customers also like the speed and display quality. However, some customers disagree on accuracy, build quality, and battery life.
AI-generated from the text of customer reviews
Customers find the blood oxygen monitor functional and easy to use. They say it works well, provides clear readings, and is convenient for checking stats. Many consider it a good value for the money and appreciate its handy case.
"...times a day -- more if it's a heavy exercise day -- and I've seen no issues at all...." Read more
"Easy to read, functions as described." Read more
"Well made, carefully packaged and worked well right out of the box. Worthy of it's price." Read more
"Excellent meter for a reasonable price that returns accurate readings a bit faster than expected...." Read more
Customers find the blood oxygen monitor easy to use and read. It takes seconds to clip to a finger and a simple push of the button gives them a reading. They like being able to read the display at different angles, as it auto-rotates so you can easily see it from any angle. The product is functional, practical, convenient, and handy.
"...It's accurate, easy to set up and use (just put in the batteries), and the lanyard and case make it easy to take along when I exercise or travel...." Read more
"Easy to read, functions as described." Read more
"Easy to use and accurate. In fact, this was the same brand that a local Pulmonology office was using and matched theirs perfectly!" Read more
"Good little pulse ox tool. It works well and has a good readout." Read more
Customers find the blood oxygen monitor easy to use and providing accurate readings of their oxygen levels and pulse. They say it's a simple and reassuring way to track their levels. The bright display allows them to easily see their pulse and oxygen levels. The monitor is accurate with historical levels of oxygen and pulse rate, and displays basic cardiograph information.
"...Very easy to use. Oxygen & pulse readings are available immediately. Screen, font size & colors are easy to see...." Read more
"...This verified his oxygen levels are good and gives him peace of mind." Read more
"My husband is very health oriented and this helps him to track his heart and oxygen levels." Read more
"waste of momny" Read more
Customers appreciate the monitor's speed. They find it provides accurate readings quickly and within a few seconds. The product is easy to use and efficient, providing critical information rapidly.
"Excellent meter for a reasonable price that returns accurate readings a bit faster than expected...." Read more
"Was exactly what I want. Performance is excellent" Read more
"Does the Job and fast." Read more
"It takes quite awhile to have a steady reading. Otherwise, it appears to give okay results." Read more
Customers appreciate the blood oxygen monitor's display. They find the large and bright LED display easy to read, with clear numbers and a nice visual pulse readout. The display is attractive and has great color options.
"...the same brand that a local Pulmonology office was using and matched theirs perfectly!" Read more
"...Oxygen & pulse readings are available immediately. Screen, font size & colors are easy to see...." Read more
"...The large led display makes viewing the results a snap and is easily visible in the day or night...." Read more
"...It comes with a nice strap and carrying case as well...." Read more
Customers have different views on the accuracy of the blood oxygen monitor. Some find it accurate and consistent, monitoring pulse strength in a matter of seconds. Others report inaccurate readings, inconsistent results, and questionable O2 levels.
"...It's accurate, easy to set up and use (just put in the batteries), and the lanyard and case make it easy to take along when I exercise or travel...." Read more
"Easy to use and accurate. In fact, this was the same brand that a local Pulmonology office was using and matched theirs perfectly!" Read more
"While it’s a little early to tell accuracy, it appears to do what it’s supposed to do. I’m surprised by the lacking of a lanyard...." Read more
"...This one had the same features. So far it is accurate, and I'm happy with my purchase." Read more
Customers have mixed opinions about the blood oxygen monitor's build quality. Some find it well-made and reliable, with an easily read OLED display. Others mention it's cheaply made, with batteries hardly staying in, and cheap plastic. It lasted about a month before breaking or falling apart with typical clinical use. Overall, some customers feel it's not worth the high price and only reliable half the time.
"...It is a little expensive but I will keep it for now." Read more
"...all operate on similar technology, so it comes down to the quality of the materials used and how it's put together...." Read more
"...All this junk these days is made in China so substandard" Read more
"Well made, carefully packaged and worked well right out of the box. Worthy of it's price." Read more
Customers have mixed views on the battery life of the blood oxygen monitor. Some say it's not a battery hog, and the first set lasted about 18 hours. Others mention that the battery cover keeps coming off and the battery holder in the back falls off.
"...Also, when I replaced the battery, I could not secure the bottom cover again. It would not snap into place." Read more
"...And it’s not a battery ”hog” -- the first set if batteries lasted about 18 months of daily use, checking my numbers 2 or 3 times a day...." Read more
"I don’t like the fact that these come with the displays pre scratched. That’s my biggest complaint. I retuned one because I thought it was used...." Read more
"Does not work well. Back constantly coming off" Read more
Reviews with images

Top reviews from the United States
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- Reviewed in the United States on April 23, 2017UPDATE: Still using this several times a day, and it’s still going strong after over 2.5 years of use. I’ve owned several different pulse/ox devices over the years and I can say that this one is the best of the bunch. I actually came back to Amazon tonight to order a second one so that i’ll have a backup, especially since I’m doing a lot of travel these days, mostly long cruises of at least 21 days. It uses AAA batteries which are easy to find almost everywhere. And it’s not a battery ”hog” -- the first set if batteries lasted about 18 months of daily use, checking my numbers 2 or 3 times a day. AND it’s staying accurate. I’ve taken it to my doctor's office twice a year to compare with my doctor’s pulse/ox and it’s almost always exactly the same or at most 1-2 points lower than my doc’s.
It’s still a 5-star item.
Original review:
This is a newer version of an AccuMed Pulse Oximeter I've been using for several years. It's accurate, easy to set up and use (just put in the batteries), and the lanyard and case make it easy to take along when I exercise or travel. I have severe emphysema, prone to CO2 retention, so it helps to keep tabs on O2 levels when I'm doing anything strenuous so I can take pre-emptive action (specific breathing techniques) before I run into trouble.
There are a number of small oximeters on the market and they all operate on similar technology, so it comes down to the quality of the materials used and how it's put together. Some are really junk -- accuracy is whacky, the spring clip gives out, etc. This one is very good quality and built to last. I've been using it for several weeks, usually 2-3 times a day -- more if it's a heavy exercise day -- and I've seen no issues at all.
This one's a keeper -- solid 5-stars for accuracy and quality.
- Reviewed in the United States on March 17, 2025Great! Just like described.
- Reviewed in the United States on February 24, 2025Easy to read, functions as described.
- Reviewed in the United States on December 28, 2024Easy to use and accurate. In fact, this was the same brand that a local Pulmonology office was using and matched theirs perfectly!
- Reviewed in the United States on March 12, 2025I needed an additional Oxometer. Couldn't find one the same brand, as original I have. This one had the same features. So far it is accurate, and I'm happy with my purchase.
- Reviewed in the United States on March 13, 2025Well made, carefully packaged and worked well right out of the box. Worthy of it's price.
- Reviewed in the United States on December 7, 2024Excellent meter for a reasonable price that returns accurate readings a bit faster than expected. (Crossed checked this meter's readings with a high-end, medical grade (and brand) meter with pretty much the same results each time). FYI & remember that these "retail to the public" meters are for monitoring yourself in sports, athletic and exercising related activities and not for use in a professional medical environment as explained/disclaimed in the meter's enclosed instructions as well as on the product's webpage (on Amazon and other seller sites). My take by this statement is that it's more to protect both the manufacturer and the seller than the meter's owner and end user. Medical office type meters are much more expensive than these "over the counter" meters that consumers (like us) buy...though the technology is pretty much the same.
- Reviewed in the United States on March 21, 2025Works very well. Nice tight finger fit.
Top reviews from other countries
- COLIN SHARPEReviewed in the United Kingdom on February 7, 2017
5.0 out of 5 stars This is an excellent tool. I am currently in hospital and can ...
This is an excellent tool. I am currently in hospital and can check my oxygen level against the ones they use in hospital. Very good quality I am very pleased with the product.
- Paul WeaverReviewed in Australia on April 11, 2021
5.0 out of 5 stars Very Good Product
Very good product.
- tenella1028Reviewed in the United Kingdom on January 28, 2017
4.0 out of 5 stars Average
Okay+
- Amazon CustomerReviewed in the United Kingdom on January 17, 2017
5.0 out of 5 stars It has proved very useful as my wife has recently been in hospital after ...
It has proved very useful as my wife has recently been in hospital after being unable to monitor her oxygen levels more closely
- stuart douglasReviewed in the United Kingdom on January 29, 2017
5.0 out of 5 stars beautiful equipment
Beautiful plece of equipment and did exactly what its meant to do.
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