BBy Bikram Nath·Researched from UK Amazon listings·Updated 2026-10-13·6 products compared
Disclosure: As an Amazon Associate I earn from qualifying purchases. This guide contains Amazon affiliate links, and we may earn a commission — at no extra cost to you — but it never changes our rankings.
What are the best pulse oximeters to buy in the UK?
Our top pick for Pulse Oximeters in the UK is the OxiPro OX2 Fingertip Pulse Oximeter.
The OxiPro OX2 is our top pick: its listing states a colour OLED display, an audible and visual low SpO2 alert with an adjustable threshold, a perfusion index reading and a 2 Years Manufacturer's Warranty. The MHRA does not recommend that members of the public use oximeters at home unless they have been advised to do so by a qualified clinician, have been shown how to take an accurate measurement, and are providing results for clinical review.
Our top pick is the OxiPro OX2: its listing describes a colour OLED display, readings typically shown in about 10 seconds, an audible and visual low SpO2 alert with an adjustable threshold, a perfusion index reading and a 2 Years Manufacturer's Warranty. The other five picks are fingertip oximeters from BLT, HealthTree, Nationwide Paper and AILE. Before buying one, note what the regulator says. The MHRA does not recommend that members of the public use oximeters at home unless they have been advised to do so by a qualified clinician, have been shown how to take an accurate measurement, and are providing results for clinical review. This page compares what the Amazon UK listings state. It is not medical advice.
Buying guide
What should you look for in Pulse Oximeters?
1Regulatory marking: the MHRA says pulse oximeters intended for clinical use are regulated as medical devices and should display a valid CE, CE UKNI or UKCA mark. In the listing details we read, the two BLT models state 'CE certificated & FDA approval'; that is the seller's wording, which we have not verified. The OxiPro, HealthTree, Nationwide Paper and AILE details we read do not mention a CE or UKCA mark, so check the product page and the packaging.
2Reading time: the HealthTree listing gives 5-8 seconds, the Nationwide Paper and AILE listings 8 seconds, and the OxiPro listing typically about 10 seconds, with up to 1 minute for stable results. The BLT listings say a few seconds.
3Alerts: the OxiPro has an audible and visual alert when blood oxygen saturation drops below a factory threshold of 93%, adjustable in settings. The Nationwide Paper listing describes an audio and visual alarm if oxygen levels or pulse rate exceed preset limits. The other four listings do not mention an alarm.
4Batteries: the HealthTree comes with 2x AAA batteries pre-installed, and both BLT listings include 2x AAA batteries. The Nationwide Paper listing says the battery is not included. The OxiPro and AILE details we read do not say.
5Accuracy claims: the HealthTree listing claims ±2% accuracy, and the AILE listing says its accuracy can reach plus or minus 2%. Neither listing says how that figure was measured. Separately, the MHRA says that to meet the accuracy requirements of the applicable technical standard, the root-mean-square difference between the oximeter and the true value must be below 4% across the range of 70-100% SpO2, and that pulse oximetry will not give a precise value of oxygen saturation but is useful for following trends.
Our process
How do we choose our picks?
We don’t lab-test products ourselves. Instead we synthesise current Amazon UK listings and published specs into clear, honest recommendations. We earn a commission if you buy through our links, but that never changes which products we rank.
Current UK availability
We check each pick against live Amazon UK catalogue data rather than last year’s model lists. Stock moves fast, so a listing can sell out after we publish.
Published specs
We compare manufacturer specifications so each pick is right for a real budget and use-case.
UK-specific fit
We factor in UK voltage and plug/fitting standards — details that generic global lists miss.
6 display modes, 5 brightness levels, readable in 4 directions
Large OLED with pulse waveform
6 display modes, 5 brightness levels, readable in 4 directions
Dual-colour OLED with waveform and bar graph
Large red digits, readable in both directions
Measurements
SpO2, pulse, perfusion index (PI)
SpO2, heart rate, perfusion index
SpO2, pulse rate, PI
SpO2, heart rate
SpO2, pulse rate, pulse strength
—
Reading Time
Typically about 10 seconds; up to 1 minute for stable results
—
5-8 seconds
—
Within 8 seconds
Within 8 seconds
Batteries
—
2x AAA included; more than 18 hours continuous use, by the listing
2x AAA, pre-installed
2x AAA included; more than 18 hours continuous use, by the listing
Not included
—
Auto Power Off
—
Within 8 seconds of removing the finger
—
Within 15 seconds of removing the finger
After 8 seconds of inactivity
8 seconds after removing the finger
The rankings
The best Pulse Oximeters, ranked
1
OxiPro
Top Pick
OxiPro OX2 Fingertip Pulse Oximeter
The OxiPro OX2 is the pick for alerts: an audible and visual low SpO2 alert with an adjustable threshold, plus a perfusion index reading and a 2 Years Manufacturer's Warranty in its listing.
Display
Colour OLED
Reading Time
Typically about 10 seconds; up to 1 minute for stable results
Measurements
SpO2, pulse, perfusion index (PI)
Alert
Audible and visual low SpO2 alert, factory threshold 93%, adjustable
Resolution
SpO2 to 1%, pulse to 1 bpm
Warranty
2 Years Manufacturer's Warranty
What we like
+Audible and visual low SpO2 alert with an adjustable threshold
+Perfusion index (PI) reading
+Colour OLED display
+2 Years Manufacturer's Warranty with UK based support
+The listing cites 'Medical Device Brand of the Year - UK' in the Global Health & Pharma Awards 2024, 2025 & 2026
Worth noting
–The listing details we read do not mention a CE or UKCA mark
–The details we read do not say whether batteries are included
–The listing says to allow up to 1 minute for stable results
£18.99£24.99−24%Amazon.co.uk price as of 17 Oct, 13:00 (London time). Details
BLT M70B Fingertip Pulse Oximeter with Perfusion Index
The BLT M70B is one of two picks whose listing says 'CE certificated & FDA approval', and it adds a perfusion index reading and 2x AAA batteries in the box.
Display
6 display modes, 5 brightness levels, readable in 4 directions
Measurements
SpO2, heart rate, perfusion index
Stated Marking
CE certificated & FDA approval, in the listing's words
Batteries
2x AAA included; more than 18 hours continuous use, by the listing
Auto Power Off
Within 8 seconds of removing the finger
What we like
+Listing states 'CE certificated & FDA approval'
+Perfusion index as well as SpO2 and heart rate
+6 display modes and 5 levels of adjustable brightness
+2x AAA batteries included
Worth noting
–The listing does not mention an alarm
–We did not find a warranty term in the details we read
£13.99£19.99−30%Amazon.co.uk price as of 17 Oct, 13:00 (London time). Details
HealthTree JKS50B Fingertip Pulse Oximeter with PI
The HealthTree JKS50B is the pick for a quick start: batteries pre-installed, a lanyard in the box and a 5-8 second reading in its listing.
Display
Large OLED with pulse waveform
Reading Time
5-8 seconds
Measurements
SpO2, pulse rate, PI
Stated Accuracy
±2%, by the listing
Batteries
2x AAA, pre-installed
In The Box
Lanyard, instruction manual
What we like
+Readings within 5-8 seconds, by the listing
+2x AAA batteries pre-installed, with a lanyard
+Signal strength indicator and pulse waveform
+One-button operation with auto power-off
Worth noting
–The listing does not mention an alarm
–The listing details we read do not mention a CE or UKCA mark
View on Amazon UKAmazon UK shows no offer for this product as of 17 Oct, 13:00 (London time). Details
4
BLT
BLT M70CB Fingertip Pulse Oximeter, Blue
The BLT M70CB is the second pick whose listing says 'CE certificated & FDA approval', with SpO2 and heart rate readings, a lanyard and 2x AAA batteries included.
Display
6 display modes, 5 brightness levels, readable in 4 directions
Measurements
SpO2, heart rate
Stated Marking
CE certificated & FDA approval, in the listing's words
Batteries
2x AAA included; more than 18 hours continuous use, by the listing
Auto Power Off
Within 15 seconds of removing the finger
Colour
Blue
What we like
+Listing states 'CE certificated & FDA approval'
+6 display modes and 5 levels of adjustable brightness
+Lanyard and 2x AAA batteries included
Worth noting
–The listing does not mention a perfusion index, which the M70B lists
–The listing does not mention an alarm
£14.99Amazon.co.uk price as of 17 Oct, 13:00 (London time). Details
Product prices and availability are accurate as of 17 Oct, 13:00 (London time) and are subject to change. Any price and availability information displayed on Amazon.co.uk at the time of purchase will apply to the purchase of this product.
Editor's Note
What can affect a reading, according to the MHRA's guidance for healthcare professionals on the use and regulation of pulse oximeters: nail polish and false nails, poor peripheral blood circulation (cold is one of the situations it lists), and some dyes such as henna or tattoo ink. The MHRA also says it is possible that patients with lighter skin may have small differences in the result reported when compared to those with darker skin, and calls this just one factor that can alter the result. It adds that the relative change in a patient's reading may be of greater significance to clinical management than the absolute value. The MHRA does not approve medical devices directly; for pulse oximeters the manufacturer shows compliance through third-party approval by a designated approved body.
Our Take
As a default, the OxiPro OX2, for its adjustable low SpO2 alert, perfusion index and 2 Years Manufacturer's Warranty. If a stated CE claim is your first filter, the BLT M70B and M70CB listings both say 'CE certificated & FDA approval', and the M70B adds a perfusion index. For batteries pre-installed and a 5-8 second reading, the HealthTree JKS50B.
Questions & answers
Frequently asked questions
Should I use a pulse oximeter at home?
The MHRA does not recommend that members of the public use oximeters at home unless they have been advised to do so by a qualified clinician, have been shown how to take an accurate measurement, and are providing results for clinical review. That is from the MHRA's guidance on the use and regulation of pulse oximeters.
How long does a pulse oximeter take to give a reading?
It varies by listing. The HealthTree JKS50B gives 5-8 seconds, the Nationwide Paper and AILE models 8 seconds, and the OxiPro OX2 typically about 10 seconds, with up to 1 minute for stable results. The BLT listings say a few seconds.
Which pulse oximeter has a low SpO2 alarm?
The OxiPro OX2 has an audible and visual alert when blood oxygen saturation drops below a factory threshold of 93%, which can be adjusted in settings. The Nationwide Paper listing describes an audio and visual alarm if oxygen levels or pulse rate exceed preset limits. The other four listings do not mention an alarm.
Which pulse oximeters state CE certification?
In the listing details we read, the BLT M70B and the BLT M70CB: both say 'CE certificated & FDA approval', which is the seller's wording and not something we have verified. The MHRA says pulse oximeters intended for clinical use are regulated as medical devices and should display a valid CE, CE UKNI or UKCA mark, and that it does not approve medical devices directly. The other four listings' details do not mention a mark, so check the product page and the packaging.
Are pulse oximeters less accurate on darker skin?
The MHRA says these devices typically work by shining a light into the skin, and that because of this it is possible that patients with lighter skin may have small differences in the result reported when compared to those with darker skin. It describes this as just one factor that can alter the result; its guidance also lists nail polish, false nails, poor peripheral blood circulation and some dyes.
Do pulse oximeters come with batteries?
It depends on the listing. The HealthTree JKS50B has 2x AAA batteries pre-installed, and the BLT M70B and M70CB listings include 2x AAA batteries. The Nationwide Paper listing says the battery is not included. The OxiPro and AILE details we read do not say.
What does the perfusion index (PI) show?
The OxiPro listing says the perfusion index indicates pulse strength at the sensor site, to help assess signal quality and the best finger to use. The OxiPro OX2, BLT M70B and HealthTree JKS50B listings include a PI reading.
Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. UKPicks earns a small commission from qualifying purchases made via links on this page. This does not affect our editorial recommendations or the price you pay.
