This ring continuously tracks heart rate, blood oxygen, sleep, activity, and stress 24/7. It is constructed from lightweight titanium, weighing 3-5g, ensuring strength, corrosion resistance, and biocompatibility. The ring includes a custom sizing solution for optimal comfort and precise tracking. Price drops from $259 to $169 to $159 w/ free shipping when you apply the coupon code "IHO10" at checkout.

This ring provides comprehensive sleep apnea metrics, including Apnea-Hypopnea Index and SpO2 levels. It features an advanced MCU chip for faster processing and reduced power consumption. The ergonomic design, recognized with the iF Design Award, ensures comfort and style. Price drops from $299 to $284 when you apply the coupon code "IHO15" at checkout. Shipping is free.