The Oura Ring Gen 4 in rose gold, size 9, is a new activity tracker that offers heart rate monitoring, calorie tracking, and distance tracking for both indoor and outdoor activities. It has a rechargeable battery with up to 7 days of battery life and is water-resistant. The ring also features Bluetooth connectivity, temperature monitoring, and data review capabilities. Made of titanium and designed for unisex adults, the Oura Ring Gen 4 is compatible with iOS and Android operating systems, making it a versatile and stylish option for fitness tracking.