Link your iPhones and never miss important alerts again with the new Casio G-Shock GB6900AA watch. Using Bluetooth 4.0 connectivity, receive notifications to the watch from your phone like phone calls and emails. You can also sync your time with your iPhone, great for travelers who demand accurate time, without manual adjustment, whenever a different time zone is entered. Once you’re far from you iPhone, the G-Shock vibrates when the link between is lost due to too much distance, surrounding conditions or any other obstacles then auto-reconnects after. All of these great features are inside the popular G-Shock trademark shock and water resistant construction up to 200 meters.