Masimo Freedom™

Health Watch

The Masimo Freedom health watch is an advanced biosensing watch that leverages state-of-the-art digital signal processing technology to provide continuous and reliable readings of specific health data, such as arterial blood oxygen saturation (SpO2), hydration index (Hi™), pulse rate, and heart rate. Masimo Freedom seamlessly integrates cutting-edge Masimo health-tracking technology into an elegant, user-friendly wearable with premium connectivity capabilities, including Bluetooth®, Wi-Fi, and LTE technologies, and compatibility with numerous apps.

Quick Start Guide

Step 1 — Install the Watch Band and Charge Your Watch

Attach the watch bands by pushing the connectors firmly into the openings on the watch body. You will know the bands are installed correctly when you hear a clicking sound. Tug slightly on the band to ensure it is securely connected.

To ensure proper operation, fully charge your watch before use. Place the watch on the charging base to begin charging.

Look for the “charging screen” to ensure the watch is seated properly on the base.

Step 2 — Download the App

  • If you are using an iOS phone, look for an email from TestFlight (, including in your Spam mailbox. Launch the email and follow the instructions provided.
  • If you are using an Android phone, search for Masimo Health in the Google Play Store. You will see an "early access" button. Download from there and follow instructions. IMPORTANT: If you already have Masimo Health downloaded on your phone from a past test or product, please uninstall before installing this version.

Step 3 — Put on Your Watch

Place the watch on the flat part of your wrist, avoiding the wrist bone. Tighten the watch band so the watch does not slide on the wrist. Then tighten the band by one or two more notches. To obtain good health data, the watch needs to fit snugly (but should not be uncomfortably tight).

TIP: Ensure the bottom of the watch fully touches your wrist and cannot slide back and forth.

Step 4 — Pair the Watch to the App

To pair your watch to the app, choose “Add Device” in the Masimo Health App, then select Freedom Watch from the list of devices and follow the instructions. Please do not pair by using your phone Bluetooth to find the watch; Please do not pair by using the watch Bluetooth to find your phone. Please open the Masimo Health App directly, and pair in the app.

Step 5 — Using Your Watch and App

Privacy Switch (Toggle on/off)

Privacy Mode allows your watch to completely disconnect from everything including LTE, WiFi, Bluetooth, Microphones, GPS, etc. Data tracked by your watch under the Privacy Mode will not be saved. It also saves battery in this mode.

How to Use the Watch

  • Power your watch on and off using the lower left button
    • To power on: hold button for 3 sec
    • To power off: hold button for 2 sec
  • To wake your watch, perform one of the following actions:
    • Single press the left button
    • Double tap screen
    • Raise your wrist
  • Navigation
    • A single press on the lower left button while viewing the watch face will launch the menu
    • A single press on the lower left button functions as a BACK button when not viewing the watch face
    • Double press the lower left button to return to the watch face from any screen
    • Swipe the scroll wheel in either direction to scroll through menus or lists

Masimo Health App

The Masimo Health App captures all the data collected by your wearable via Bluetooth. Using the app, you can review your history for each parameter by selecting "Trends" at the bottom of the screen.

Health Parameter Descriptions

  • Oxygen level (SpO2)
    Oxygen levels in your blood can change with heart and lung function, activity, and altitude.
  • 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).
  • 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 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.
  • Perfusion Index (Pi)
    A calculation of the relative strength of your pulse, which changes based on your circulation.
  • 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.

Other Considerations

Warning: Do not swim with the device; do not shower with the device; do not run the device under the sink, or submerge it in any kind of liquid.

Warning: Under no circumstances should you try to do a Factory Reset.

Other Warnings:

  • If you experience extreme discomfort from the device, immediately remove the device.
  • Do not expose device to extreme temperatures.
  • If needing to clean device, only use a microfiber cloth or non-abrasive fabric/material.
  • Do not travel outside of the United States with device.

  • Masimo Freedom is not a medical device.

  • Warning: Do not self-diagnose or self-medicate on the basis of Freedom health data. Always consult your doctor before using this device follow the instructions for use.

  • The Bluetooth® word mark and logos are registered trademarks owned by Bluetooth® SIG, Inc. and any use of such marks by Masimo is under license.