--- title: Masimo W1 Medical: the 200 Best Inventions of 2024 description: Find out why Masimo W1 Medical is one of the best inventions of 2024 canonical: https://time.com/collections/best-inventions-2024/7094688/masimo-w1-medical/ article:content_tier: free article:published_time: 2024-10-30T11:49:26.000Z article:modified_time: 2026-04-13T11:54:29.139Z article:section: Business og:title: Masimo W1 Medical: the 200 Best Inventions of 2024 og:description: Find out why Masimo W1 Medical made this year's list og:url: https://time.com/collections/best-inventions-2024/7094688/masimo-w1-medical/ og:site_name: TIME og:image: https://static.time.com/v3/assets/bltea6093859af6183b/blt2c287024caa31190/698a8a37457a526260d6f7b8/masimo-w1tm-medical-watch-best-inventions-2.jpg?branch=production&width=3840&quality=75&auto=webp&crop=16:9 og:image:width: 1200 og:image:height: 675 og:image:alt: Masimo W1 Medical: the 200 Best Inventions of 2024 og:type: article twitter:card: summary_large_image twitter:title: Masimo W1 Medical: the 200 Best Inventions of 2024 twitter:description: Find out why Masimo W1 Medical made this year's list twitter:image: https://static.time.com/v3/assets/bltea6093859af6183b/blt2c287024caa31190/698a8a37457a526260d6f7b8/masimo-w1tm-medical-watch-best-inventions-2.jpg?branch=production&width=3840&quality=75&auto=webp&crop=16:9 --- Oct 30, 2024 # A Stand-Out Health Tracker by [Chris Stokel-Walker](https://time.com/author/chris-stokel-walker/) ## Chris Stokel-Walker  The FDA has only approved one medical wearable that provides continuous oxygen saturation (SpO2) and pulse rate tracking: the Masimo W1 Medical watch. “If you really want a wearable that’s going to help you manage your health, the accuracy of that signal has got to be at the highest caliber,” says Omar Ahmed, executive vice president of engineering at Masimo. The device gives medical-grade accuracy a cut above most fitness trackers, monitoring the perfusion index of a person, or how well blood is circulating, alongside SpO2 and pulse rate. Tracking each of these every second, the W1 records 70,000 measurements a day—critical for those with chronic conditions. **Buy Now:** Masimo W1 Medical on [Masimo](https://fave.co/3Un4mmK) These are independent reviews of the products mentioned, but TIME receives a commission when purchases are made through affiliate links at no additional cost to the purchaser. ```json [{"@context":"https://schema.org","@type":"Article","@id":"https://time.com/collections/best-inventions-2024/7094688/masimo-w1-medical/","mainEntityOfPage":{"@type":"WebPage","@id":"https://time.com/collections/best-inventions-2024/7094688/masimo-w1-medical/"},"headline":"Masimo W1 Medical: the 200 Best Inventions of 2024","datePublished":"2024-10-30T11:49:26.000Z","dateModified":"2026-04-13T11:54:29.139Z","description":"Find out why Masimo W1 Medical is one of the best inventions of 2024","url":"https://time.com/collections/best-inventions-2024/7094688/masimo-w1-medical/","keywords":["Tech","E-Commerce","list","franchise","Magazine","best inventions"],"thumbnailUrl":"https://static.time.com/v3/assets/bltea6093859af6183b/blt2c287024caa31190/698a8a37457a526260d6f7b8/masimo-w1tm-medical-watch-best-inventions-2.jpg?branch=production&width=1200&quality=75&auto=webp&crop=1200:675&height=675","author":[{"@type":"Person","name":"Chris Stokel-Walker","jobTitle":null,"url":"https://time.com/author/chris-stokel-walker/"}],"creator":"Chris Stokel-Walker","articleSection":"Business","image":[{"@type":"ImageObject","url":"https://static.time.com/v3/assets/bltea6093859af6183b/blt2c287024caa31190/698a8a37457a526260d6f7b8/masimo-w1tm-medical-watch-best-inventions-2.jpg?branch=production&width=1200&quality=75&auto=webp&crop=1200:675&height=675","width":1200,"height":675}],"publisher":{"@type":"Organization","name":"Time","url":"https://time.com/","logo":{"@type":"ImageObject","url":"https://time.com/images/logo.png","width":528,"height":156},"foundingDate":"March 3, 1923","sameAs":["https://www.facebook.com/time","https://www.instagram.com/time/?hl=en","https://twitter.com/time","https://www.pinterest.com/timemagazine"]}},{"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"item":{"@id":"/section/business/","name":"Business"}},{"@type":"ListItem","position":2,"item":{"@id":"/tag/time-section-tech/","name":"Tech"}},{"@type":"ListItem","position":3,"item":{"@id":"https://time.com/collections/best-inventions-2024/7094688/masimo-w1-medical/","name":"Masimo W1 Medical: the 200 Best Inventions of 2024"}}]}] ```