The Smart Band 7 M7 Bracelet is a sleek fitness activity tracker with a black rubber band and plastic case. It features a blood oxygen monitor and is compatible with both Android and iOS operating systems. With a 1.62" case size, this bracelet is designed to track your fitness goals and provide you with valuable health insights while on the go. Perfect for those looking to stay active and track their health in a stylish and easy-to-use device.