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  2. Walmart just announced its largest deals event ever - AOL

    www.aol.com/news/walmart-just-announced-largest...

    Samsung Galaxy Watch4 Classic 46mm Smart Watch w/ Bluetooth $ at Walmart. ... the watch can monitor your heart rate, oxygen levels and track your workouts. The stainless steel watch also lets you ...

  3. Cyber Monday at Walmart is not over yet — shop the ... - AOL

    www.aol.com/lifestyle/walmart-cyber-monday-deals...

    The Walmart Cyber Monday sale is here and the deals won't stop. Shop gifts for everyone, including stocking stuffers for as low as $2! ... Samsung Galaxy Watch4 Classic Stainless Steel Smart Watch ...

  4. 4 Things You Should Start Buying in 2025 - AOL

    www.aol.com/4-things-start-buying-2025-180010775...

    Find Out: 7 Stocking Stuffers To Get at Five Below That Cost Way More at Walmart Ninja Creami Ice Cream Machine Just like most other things, it’s become increasingly expensive to go out for ice ...

  5. Apple Watch - Wikipedia

    en.wikipedia.org/wiki/Apple_Watch

    The Apple Watch Series 6 was announced on September 15, 2020, during an Apple Special Event and began shipping on September 18. Its principal improvement over its predecessor is the inclusion of a sensor to monitor blood oxygen saturation. [95]

  6. Pulse oximetry - Wikipedia

    en.wikipedia.org/wiki/Pulse_oximetry

    A pulse oximeter probe applied to a person's finger. A pulse oximeter is a medical device that indirectly monitors the oxygen saturation of a patient's blood (as opposed to measuring oxygen saturation directly through a blood sample) and changes in blood volume in the skin, producing a photoplethysmogram that may be further processed into other measurements. [4]

  7. Heart rate monitor - Wikipedia

    en.wikipedia.org/wiki/Heart_rate_monitor

    Welsh Government video: a smart phone heart rate monitor, 2016. More recent devices use optics to measure heart rate by shining light from an LED through the skin and measuring how it scatters off blood vessels. In addition to measuring the heart rate, some devices using this technology are able to measure blood oxygen saturation (SpO 2). Some ...