D2C Vision T500 Smart Touch Screen Watch has multiple functions to monitor your blood pressure, sleep, oxygen, heart rate, and calories. You can connect it to your phone via Bluetooth and access it from your wrist. The T500 Smart Watch has an LCD touch screen and is compatible with both Android and iOS devices.its Functions, Heart Rate Monitor ,Reminder ,Calories Counter ,Time ,Alarm ,Distance Tracker ,Step Monitor ,Call Function ,Wrist sense, Music Control, Notification Update Working: Bluetooth connection required to connect to mobile (Android and iOS). Its one-touch Bluetooth calling option along with a built-in mic lets you effortlessly make crystal clear calls. And, this smartwatch is powered by a long-lasting battery. Featuring an adjustable strap, this smartwatch is easy to wear and offers an excellent fit. make your lifestyle fashionable with this Smartwatch This smartwatch is always there when you need it during your daily routine. You can received call and talking without any disturbance ,in this watch you can use calculator ,Bluetooth, etc.