WristOx2® Model 3150 with USB

Wrist-Worn Pulse Oximeter

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WristOx2® Model 3150 with USB

Wrist-Worn Pulse Oximeter

Featuring Nonin PureSAT® SpO2 technology, the WristOx2 3150 USB delivers fast, accurate oxygen saturation and pulse rate readings in challenging conditions, including low perfusion and motion. The WristOx2 3150 USB is compatible with a wide range of Nonin PureLight® sensors and provides continuous, reliable SpO2 monitoring and data recording. Applications include overnight oximetry studies at home, in the hospital, and in sleep labs.


Overnight Reporting

Available when used with Nonin nVISION® data management software


Pulmonary Rehab

Advanced features such as 6 Minute Walk Test (6MWT) or overnight oximetry reporting available


Homecare Use

For overnight sleep apnea screening or oxygen qualification screening directed by a clinician

Prevent Exposure & Cross-Contamination

Single use accessories are available to limit exposure to infectious agents

Compact Design

Small size wears like a watch, with large display screen and enhanced sensor connector design

Enhanced Memory

1,080 hours of non-volatile memory at a four-second sampling rate with additional high resolution variable sampling options of one or two seconds

PureSAT Technology

Pulse-by-pulse averaging algorithm that is able to adjust with the patient’s condition for precision accuracy.

Data Verification

Memory Volume Indicator (MVI) Mode provides a graphic display in hours and minutes, verifying that a sufficient amount of data has been recorded during oxygen qualification testing

Secure Data Transfer

Data can be transferred securely to nVISION® via USB connection

Exclusive Sensors

WristOx2 sensors are designed exclusively for use with WristOx2 3150 oximeters

Long Battery Life

Operates for 48 hours on two AAA batteries

Proven Durability

Dependable design and construction, backed by an industry leading 3-year warranty

Blog Post
COPD Athlete Runs Boston Marathon

Russell Winwood was diagnosed with chronic obstructive pulmonary disease (COPD), a chronic inflammatory lung disease causing obstructed airflow from the lungs. About a year after his diagnoses, Russell completed his first full Ironman Triathlon race.

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Case Study
WristOx2® Model 3150 Beats VirtuOx VPOD in Hypoxia Testing

The WristOx2 Model 3150 accurately measured 20 out of 21 desaturation events (95.2%).

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White Paper
Managing Oral Appliance Therapy during Treatment for Obstructive Sleep Apnea

Overnight pulse oximetry monitoring is essential in pre-confirming the effectiveness of oral appliance therapy (OAT) for obstructive sleep apnea (OSA) treatment. A pulse oximeter monitors a patient’s heart rate and blood oxygen saturation in arterial blood. Overnight pulse oximetry has been shown to be an effective sleep screening tool used to evaluate the response to OAT.

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Compatible Sensors from Nonin

Nonin pulse oximetry sensors are manufactured using high-quality materials, making them highly durable in a wide variety of patient settings. They feature exclusive technologies and are designed with patient comfort in mind, minimizing potential patient discomfort, which can impact the accuracy of sensor readings. Use Nonin's sensor compatibility tools to discover the best sensor(s) for your patient needs.


  • Description


  • WristOx Carrying Case


  • WristOx PC USB Interface Cable


  • Single-Use Accessories for WristOx, Adult (Box of 15)


  • Adjustable Wristband


  • Single-Use Wristband


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Product Specifications and Resources

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Purchase Info