Features: Bluetooth calling function, iPhone and Android compatibility, customizable watch faces, Dynamic Island, message notifications Connectivity: Bluetooth Screen Size: 1.83 inches ✅【Cutting-edge calling function & convenient incoming call/app notifications】When connected to a smartphone via Bluetooth, you can make/receive calls on your smartwatch. It supports all functions such as receiving, rejecting, checking call history, and saving contacts. You can instantly receive notifications for incoming calls, LINE, SMS, Twitter, Facebook, Instagram, etc. You won't miss important messages, which is very convenient. Compatible with both iOS and Android devices, it supports your daily communication more conveniently. ✅【New upgraded dynamic area notification function】You can use the newly developed original Dynamic Island notification function. If there is a message, the notification will flow at the top of the smartwatch screen. It is more convenient and easier to see than conventional notifications. ✅【Multi-functional activity tracker - great for sports and daily life】This multi-functional sports watch is equipped with many kinds of exercise modes, and when connected to the mobile app, it can measure various activity levels such as steps, distance traveled, calorie consumption, and sleep. Set exercise goals according to your situation to increase the effect of exercise. In addition, it has convenient functions for daily use such as multiple exercise modes, music playback, alarm clock, flashlight, activity tracker, pedometer, remote shooting, weather forecast, phone, and message notifications. It has waterproof and dustproof performance and is resistant to sweat, rain, and splashes. You can use it freely in sports and daily life without worrying about getting wet. ✅【1.83-inch large screen & free watch face settings】The smartwatch adopts a 1.83-inch high-definition touch screen, displaying notifications and characters on a clear picture quality and high-precision large screen, so you can feel a comfortable visual sensation and excellent operability. Of course, in addition to the default watch face of the main unit, you can switch to more than 80 types of watch faces using the dedicated app, and you can freely set photos of your favorite family, lovers, idols, etc. on the watch face screen. You can easily set the watch face screen to your favorite photo. ✅【Various compatible devices & reliable service】Compatible with Android 5.0, iOS 9.0, and Bluetooth 4.0 or higher.