A method comprising: receiving, by at least one system service executing at a computerized watch, from an application that is currently executing, information about a user controllable operation being performed by the application, the computerized watch having a user interface component configured to receive user input; responsive to receiving the information about the user controllable operation being performed by the application, automatically generating, by the at least one system service, a dynamic control element (118, 318, 418) associated with the user controllable operation being performed by the application, wherein the dynamic control element includes: a first portion (134, 332A, 332B, 432) that presents at least a subset of the information about the user controllable operation being performed by the application, and a second portion (132, 330A, 330B, 430) that obtains user input that adjusts the performance of the user controllable operation being performed by the application; and outputting, by the at least one system service, for display by the user interface component, a user interface (114, 314, 414), wherein the user interface includes: the dynamic control element, and one or more static control elements (116, 316, 416) that control operations being performed by the at least one system service, wherein the one or more static control elements are independent of operations being performed by applications executing at, or communicating with, the computerized watch. receiving, by at least one system service executing at a computerized watch, from an application that is currently executing, information about a user controllable operation being performed by the application, the computerized watch having a user interface component configured to receive user input; responsive to receiving the information about the user controllable operation being performed by the application, automatically generating, by the at least one system service, a dynamic control element (118, 318, 418) associated with the user controllable operation being performed by the application, wherein the dynamic control element includes: a first portion (134, 332A, 332B, 432) that presents at least a subset of the information about the user controllable operation being performed by the application, and a second portion (132, 330A, 330B, 430) that obtains user input that adjusts the performance of the user controllable operation being performed by the application; and a first portion (134, 332A, 332B, 432) that presents at least a subset of the information about the user controllable operation being performed by the application, and a second portion (132, 330A, 330B, 430) that obtains user input that adjusts the performance of the user controllable operation being performed by the application; and outputting, by the at least one system service, for display by the user interface component, a user interface (114, 314, 414), wherein the user interface includes: the dynamic control element, and one or more static control elements (116, 316, 416) that control operations being performed by the at least one system service, wherein the one or more static control elements are independent of operations being performed by applications executing at, or communicating with, the computerized watch.