Achieving a precise fit is the most critical step in your smart ring journey. Unlike traditional jewelry, the QALO SR-1 and SR-2 Smart Rings rely on integrated health sensors that must maintain consistent, flush contact with the skin to provide accurate data. This official sizing kit lets you determine an exact measurement using durable sizing rings that replicate the width and comfort curve of both the SR-1 Original and SR-2 Slim profiles. Because finger size naturally fluctuates with hydration, temperature changes and physical exertion, a momentary measurement is often not enough; wear your selected sizing ring for a full 24 hours to confirm it stays comfortable and secure during activity and rest. Simply test the sizes on your index, middle or ring finger to find the one that remains stable and comfortable, so your smart ring delivers the seamless, low-profile fit required for reliable long-term health and activity monitoring.
Designed to help you find the perfect fit for both the QALO SR-1 Original and SR-2 Slim Smart Rings. One kit covers all available styles and sizes (6-13).
Finger size fluctuates with temperature and activity. Wear the sizer for at least 24 hours to make sure your chosen size stays comfortable and secure day and night.
A proper fit is critical for health tracking. This kit helps you find the snug fit the sensors need to capture accurate heart rate and sleep metrics on both ring models.
Avoid the hassle of exchanges. Use the official QALO sizing tools before you buy so you can order your preferred QALO Smart Ring with total confidence.
We’ll try to get your question answered within 24 hours by a Best Buy customer or brand representative.