This watch has advanced health monitoring capabilities, displayed on the home screen together with the ability to share.  The provider has a medical device background.
 
The first of its kind, the Masimo W1 offers accurate, continuous health data and actionable health insights – from the leader in hospital pulse oximetry – in a personal, lifestyle-friendly watch.
 
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Building on Masimo’s decades of leadership in creating revolutionary noninvasive blood parameter monitoring solutions, Masimo W1 provides a variety of physiological data – including for the first time Hydration Index (Hi) alongside oxygen level (SpO2),* pulse rate, pulse rate variability, heart rate, respiration rate, pleth variability index, and perfusion index – for consumers wanting to make better-informed health and lifestyle decisions, improve their fitness, or track their health data on their own or with friends and family.

"Masimo pulse oximetry is used to monitor more than 200 Million patients annually".

Masimo SET® is the primary pulse oximetry technology used at 9 of the top 10 hospitals as ranked in the 2022-23 U.S. News & World Report Best Hospitals Honor Roll.Reference2

Masimo SET® has been shown in over 100 studies to outperform other pulse oximetry technologies in hospital use.Reference3

For Masimo W1, we have adapted monitoring technology based on Masimo SET® pulse oximetry to optimize the capture of health data on the wrist.

Oxygen level (SpO2)*

Oxygen levels in your blood can change with heart and lung function, activity, and altitude


Hydration Index (Hi)

An index calculated to reflect your relative level of hydration; studies have shown that optimal hydration can improve sleep quality, cognition, mood, and more


Pulse rate (PR)

How often the heart pushes blood through your body, which can change with general health, physical activity, and with your mental or emotional state (e.g., stress, anxiety)


Heart Rate (HR)

The number of times the heart beats in a minute, based on electrical signals

Pulse Rate Variability (PRV)

The changes in your pulse rate that can show how consistently your blood is being pushed through your body, even with exercise or under stress

Pleth Variability Index (PVi®)

A calculation based on the changes in your perfusion index, which may be affected by your fluid volume during your respiration cycle and can increase with lower fluid levels

Breaths per minute (RRp®†)

The number of breaths you take in a minute, based on the pleth; respiration rate can change with your general health condition, physical activity, or mental or emotional state

Perfusion Index (Pi)

A calculation of the relative strength of your pulse, which changes based on your circulation.