The Smart Watch D20 Ultra is a sleek and durable device designed for those who are fitness-conscious and tech-savvy. With a waterproof design, it allows for uninterrupted tracking of your activities, whether you are swimming or simply taking a shower. The black rubber band provides a comfortable fit, while the Android Wear operating system ensures seamless integration with your smartphone. The D20 Ultra model is equipped with a range of features that make it a must-have accessory for those looking to monitor their health and fitness on-the-go.