SIZE BEFORE YOU BUY – Size with Gen3 Sizing Kit prior to purchasing Oura Ring Gen3 (different sizing from Oura Ring 4). For additional details, see “From the brand” section below.

THE REVOLUTIONARY SMART RING - Track your sleep, activity, stress, heart rate and more with the Oura Membership. First month included for new members, then is 5.99/mo. Register for Oura Membership on the Oura App.

MORE ACCURATE BY DESIGN - Your finger provides the most accurate pulse reading, making your health data and insights more personal than ever. Oura Ring’s research grade sensors monitor over 20 biometrics with precision

SYNC WITH YOUR FAVORITE APPS - Compatible with iOS and Android — Oura seamlessly integrates with over 40 appsk including Apple Health, Google Health Connect, Natural Cycles, Flo, Strava, & more

Item is used with signs of wear (see picture), it worked fine when I used it last. I did charge it every evening.

Comes with box, literature as pictured, charger, no cable included (uses USB-C).