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2. We Tested All the Smart Rings. Here Are the 6 Best for ... - AOL

   www.aol.com/tested-smart-rings-6-best-152600082.html

   O2ring Wearable Pulse Oximeter. Another wallet-friendly smart ring option, this device from Wellue features a generous screen on top to read your heart rate, blood oxygen level, and time.

3. The 4 Best Smart Rings That Will Track Your Health and Look ...

   www.aol.com/lifestyle/4-best-smart-rings-track...

   Aside from style and comfort (most smart rings give a free fitting kit with purchase FYI), there are some factors to keep in mind when deciding which smart ring to pick up. These are our big three.

4. The 4 Best Smart Rings That Will Track Your Health and Look ...

   www.aol.com/5-best-smart-rings-ultimate...

   Don't let the name device you, any Android phone works with the Samsung Galaxy Ring—although you do have access to extra features like Samsung Find if you have a Galaxy phone.

5. Smart ring - Wikipedia

   en.wikipedia.org/wiki/Smart_ring

   Secure access control such as for company entry and exit, home access, cars, and electronic devices was the first use of smart rings. Smart rings change the status quo for secure access control by increasing ease of use, decreasing physical security flaws such as by ease of losing the device, and by adding two-factor authentication mechanisms including biometrics and key code entry.

6. Samsung Galaxy Ring - Wikipedia

   en.wikipedia.org/wiki/Samsung_Galaxy_Ring

   The Samsung Galaxy Ring is 7.0mm by 2.6 mm in dimensions and weighs between 2.3 and 3 grams, depending on ring size. The ring has 8 MB of RAM and a battery between 18 and 23.5mAh (depending on ring size) which lasts up to 7 days. The ring is equipped with an accelerometer, PPG and skin temperature sensors. The ring uses BLE 5.4

7. Oura Health - Wikipedia

   en.wikipedia.org/wiki/Oura_Health

   The second and third-generation rings came out in 2018 and 2021, respectively. [13] The Oura ring is intended to be comfortable and not disrupt sleep or exercise. The operation of the Oura Ring is based on infrared LEDs. The light from the LEDs is reflected through the skin and the changes in the reflection are analysed by an algorithm ...