Review: Oura Ring is a good complement to the Apple Watch

AppleInsider reviews the Oura Ring, a fashionable wearable that tracks key sleep measurements and can alert you to subtle health or bodily changes.Oura Ring tracks your sleep, readiness, and activityThe Oura Ring is a sleep, readiness, and activity tracker that slips on your finger. You can wear it day and night, while you're working, swimming, or bathing. It isn't much larger than a regular ring, and nobody will suspect it's a piece of advanced technology. Read more...