Fully tested and good working conditions comes in original package and compatible charging cable The Oura Ring Gen 4 Stealth Size 9 is a unisex adults' activity tracker that can be used both indoors and outdoors. It features a sleek noir mat colour and provides heart rate measurements. With a battery life of up to 5 days, this ring also functions as a sleep tracker and has an accelerometer sensor for accurate tracking. Designed for running and jogging, this activity tracker is compatible with Android operating systems and is made in the United States by the brand Oura. Perfect for fitness enthusiasts looking to track their activities in both decimal and imperial units.
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