Check the listing for details. Fossil World Time - Calculator, Digital Calendar, Alarm Clock. Condition: Used. Listed at 30.00 USD. This device is by Fossil. Is 'vintage' to the 1990's. It is a 'World Time' digital clock that also has calculator, calendar, and alarm clock features. There is no power on/off for this piece; you simply unfold the casing to reveal the keyboard and screen. When opened, the unit will stand upright all by itself (per the main photo). The machine does not have a 'case.' The (black) leather around the device is a casing that is permanently attached. When closed, this piece looks like a money clip and/or small men's wallet. Battery replacement (a single 3-volt) is accomplished by removing 4 tiny screws around the screen, then peeling back the casing to get at the battery compartment. The device will run for many months before the battery wears out. There is no box and no instructions included.