The Milavan Ring 2.0 in size 12 is a unisex activity tracker designed for individuals who enjoy running and jogging. This advanced fitness technology provides heart rate monitoring and connects via Bluetooth for convenience. Made from high-quality stainless steel, the ring offers a sleek and durable design that can be worn comfortably on the hand. With a battery life of up to 5 days, this activity tracker is perfect for those looking to track their fitness progress accurately and efficiently.