The RIFESI Smart Ring is a minimalist fitness ring and sleep tracker designed for both men and women. It is a silver ring made from aluminum alloy with a sleek black case and wireless communication via Bluetooth. The smart ring is compatible with smartphones and features a fitness tracker with various activity tracking capabilities such as fitness, walking, running, yoga, and swimming. With a battery capacity of 18 hours and water resistance up to 50 meters, this smart ring is a stylish and functional accessory for everyday wear, making it a great choice for anyone looking to track their health and fitness goals. H8 Leia Mais