The purpose of the study is to collect SpO2 data with simultaneous transfer standard SpO2 measurements data on human participants.

The primary objective of the study is to collect SpO2 data with simultaneous transfer standard SpO2 measurements data (simulating blood sample Spo2) on adult human subjects. Transfer standard is a validated pulse oximetry equipment with a calibration directly traceable to CO-oximetry. Test method and protocol is developed according to ISO 80601-2-61:2017 annex EE.3 (PROCEDURE for non-invasive laboratory testing on healthy adult volunteers) The safety objective is to collect safety information, including type and number of AEs, SAEs, and device issues.

This is a pre-market, open label, prospective, non-randomized clinical research study conducted at one site in the United States.

Inclusion Criteria:

1. Participant is adult 18-50 years of age.
2. Biological Male or female of any race
3. Participant is a non-smoker or who has not smoked within 2 days prior.
4. Participant must have the ability to understand and provide written informed consent.
5. Participant is adult must be willing and able to comply with study procedures and duration.

Exclusion Criteria:

1. Participant is considered as being morbidly obese (defined as BMI greater than 39.5)
2. Compromised circulation (i.e., Raynaud's Syndrome), injury, or physical malformation of fingers, toes, hands, ears or forehead/skull or other sensor sites which would limit the ability to test sites needed for the study. (Note: Certain malformations may still allow participants to participate if the condition is noted and would not affect the particular sites utilized).
3. Tattoo in the optical path which would limit the ability to test sites needed for the study.
4. Females who are pregnant - confirmed by self-performed and self-reported positive urine pregnancy test performed on the day of the study unless the participant is known to be not of child-bearing potential
5. Participants who have smoked in the last 2 days or participants who have refrained, for at least 48 hours, with COHb levels greater than 3% as assessed per site standard operation procedure.
6. Participants with self-reported respiratory conditions such as: uncontrolled/severe asthma, flu, pneumonia/bronchitis, shortness of breath/respiratory distress, unresolved respiratory or lung surgery, emphysema, COPD, lung disease, and/or recent COVID (last 2 months).
7. Participants with self-reported heart or cardiovascular conditions such as: cardiovascular surgery - except successful minor surgery without clinical symptoms (i.e., PFO, PDA), chest pain (angina), previous heart attack, blocked artery, unexplained shortness of breath, congestive heart failure (CHF), history of stroke, transient ischemic attack, carotid artery disease, myocardial ischemia, myocardial infarction, cardiomyopathy, Cardiovascular implantable active medical device (such as pacemaker or automatic defibrillator), Heart rhythms other than a normal sinus rhythm or with respiratory sinus arrhythmia, and/or High blood pressure: systolic greater than140 mmHg or diastolic greater than 90 mmHg on 3 consecutive readings
8. Participants with self-reported health conditions such as: diabetes, uncontrolled thyroid disease, kidney disease/chronic renal impairment, history of seizures (except childhood febrile seizures), epilepsy, history of unexplained syncope, recent history of frequent migraine headaches, recent symptomatic head injury (within the last 2 months), Cancer requiring chemotherapy, radiation, or currently on treatment, Participants with self-reported known clotting disorders, history of bleeding disorders or personal history of prolonged bleeding from injury, history of blood clots, hemophilia, current use of blood thinner: prescription or daily use of aspirin, and/or Sickle Cell Trait or Disease.

10. Participants with severe contact allergies to standard adhesives, latex, silicone, or other materials found in pulse oximetry sensors, ECG electrodes, respiration monitor electrodes or other medical sensors (self-reported) 11. Unwillingness or inability to remove colored nail polish or non-clear artificial nails from test digits 12. Surgical hardware in pathway which would limit the ability to test sites needed for the study 13. Other known health condition, should be considered upon disclosure in health assessment form.

2 Weeks

All adverse events (AE), including all serious adverse events (SAE), are required to be collected, investigated, and documented. AEs will be collected from [describe the reporting period, e.g., from the time they enter the scan room to the time they leave the scan room]. All AEs will be followed through to their resolution.