This item is Bluetooth Model & International Version. (**IT DOES NOT SUPPORT 2G, 3G, 4G LTE MOBILE NETWORKS**) It comes with a European plug, but any standard micro 5 pin USB cable (Android phone charging cable) works. Compatible with Android 4.4 (KitKat) and later with 1.5GB RAM. Some features may not be available. For best compatibility, connect with Samsung Galaxy phones. (It does NOT support Samsung Tablet & iOS) The Gear S3 has a built-in speaker that lets you make or take calls right away without ever having to remove your phone from your pocket. (*Bluetooth model requires Wi-Fi connection and a voice call app for phone-free calls.) More