Factory reset done, packed up and will ship 24hr or less You get the ring, the charger and charger cable. Gently used but does have some typical desk dings. Every Oura Ring is made of titanium: built to last, lighter than the average wedding band, non-allergenic, and water resistant. Water resistant up to 100m/328 ft Non-allergenic Withstands a variety of temperatures, ranging from saunas to ice baths Red LEDs measure blood oxygen levels while you sleep Green LEDs monitor heart rate 24/7 PPG sensors read resting heart rate, heart rate variability, and respiration NTC sensors monitor your nighttime skin temperature trends Oura Ring fully charges within 80 minutes and has up to 7 days of battery life. Track your health 24/7 without being slowed down by charging. Width: 7.9mm, Thickness: 2.55mm (size of a wedding band), Weight: 4 to 6 grams (depending on ring size).