This is a Chinese-made smartwatch-style device with a color display and heart rate monitor. You can search for "QX7" to find more information about its features. I used it as a regular watch. The battery life was surprisingly good, and I could check the time for almost a week on a single charge, which was very convenient. You can also record sleep data with the app, but the accuracy is a bit questionable. It's very cheap, so it's a good way to try one out. I used a protective sheet on the screen, so it's in good condition with few scratches. The band shows some signs of use. I will ship it after resetting the device. - Color: Black - Display: Color display - Functions: Call function, heart rate monitor, exercise tracking - Band Material: Silicone Thank you for looking.