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The Sock Shoe should fit snugly - not too tight or too loose. Take off the sock shoe immediately in case of redness, swelling, or skin irritation.
3. Wearing Detection (For Smart Sock Shoes Purchased After January 1, 2025):
Smart Sock Shoes purchased after January 1, 2025 include a built-in hardware-based wearing detection feature. To ensure it works properly:
- Make sure the Sock Shoe is snug, comfortable, and properly aligned on the foot.
- Remain still and minimize movement during measurement for best results.
- The wearing detection accuracy is 90% or higher, meaning it works for most wearers but not all. If the feature does not work as expected, you can turn it off in Device Settings.
Additional factors about blood oxygen measurement
Even under ideal conditions, the Sense-U Sock Shoe may not be able to get a reliable blood oxygen measurement every time. For a small percentage of users, various factors may make it impossible to get any blood oxygen measurement.
Skin perfusion (or how much blood flows through skin) can impact measurements. Skin perfusion varies significantly from person to person and can also be impacted by the environment. For example, if the environment is too cold, your baby's foot may have reduced blood flow, making it difficult to obtain an accurate measurement.
Motion is another factor that can affect your ability to get successful background or on-demand measurements. Certain foot positions or excessive movement may also impact measurement accuracy.
If the resting heart rate is too high, the Sense-U Sock Shoe may not be able to obtain a successful blood oxygen measurement.