Patent ID: 7946758

Claim:
A system, comprising: a modular movement having a body housing a plurality of layers, including: a top layer of glass, a movement subassembly for displaying information, including time, wherein the modular movement includes all parts necessary for power and operation, including the displaying of the information, such that the modular movement is fully functional standalone; a case, the case including a receptacle for removably receiving the modular movement without need for a tool, such that the modular movement is user-interchangeable with another case of another portable device; wherein the receptacle is formed as an opening in a back of the case and the case includes a latching mechanism for removably retaining the modular movement, the latching mechanism being calibrated to account for when the case is worn and the modular movement is inserted into the receptacle, the modular movement is held in inside the receptacle at least in part by a wearer's body; and wherein the modular movement can be used, operated and recharged both alone and when inserted into the case.