Masimo W1™ Limited Market Release
Be among the first to try our newest health data innovations
In addition to the all of the measurements and features of the fully released Masimo W1, the limited market release model also includes Hydration Index, a powerful new tool never before available in a wearable device. Lack of proper hydration affects many physiological parameters, as the body works to restore homeostatis. Masimo W1 leverages such measurements to establish your hydration baseline, alerting you when you may be under- or over-hydrated – both of which not only affect athletic performance but can carry significant risks, especially for users with conditions like congestive heart failure. Whether you’re an elite athlete, living with a chronic illness, or just keen to gain more insight into your body’s physiological status, Masimo W1 with Hydration Index is a game changer.

Additional measurements, features, and insights will be activated throughout the program.

Masimo will provide a limited number of W1s on a first-come, first-served basis, at a 50% discount, to users who agree to the program details and to provide feedback and data to Masimo.

Program Details:

  • To apply, you must be over 18 years of age and a resident of the U.S.
  • You will need to provide weekly feedback on your experience with the watch, in the form of questionnaire answers and feedback sessions, and to submit the personal health data collected by the W1 for our engineering team to analyze.
  • You will be asked to sign a Non-Disclosure Agreement (NDA).
  • To operate, the W1 will need to be paired with a smartphone running Android or iOS, onto which you will need to download the Masimo Personal Health app.
  • As firmware, software, security, and other technical updates are released, you will be expected to download and install them as soon as possible in order to ensure your W1 is kept up to date.
  • At Masimo's discretion, you agree to return W1 to Masimo for a full refund or an exchange for a new W1.
  • Not all requests to join will be able to be honored.
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