Abstract: A portable computing device, such as a wristwatch, is described. The portable computing device contains ample processing, battery and memory resources for executing applications, but provides insufficient display output capability to render a graphical user interface during application execution. Instead, the device includes a short-range wireless communication system for relaying real-time display data to an external display device for rendering a graphical user interface on the external device. By not incorporating power-hungry display technology, speakers, other communication components, such as cellular, or other battery-draining components, the portable computing device avoids the need for bulky batteries and maintains a suitable charge over a reasonable period of time. In addition, the easy portability of the device means that it can turn any external display device into its own user input/output device such that users need not mirror their applications and data to multiple devices.

Abstract: A portable computing device, such as a wristwatch, is described. The portable computing device contains ample processing, battery and memory resources for executing applications, but provides insufficient display output capability to render a graphical user interface during application execution. Instead, the device includes a short-range wireless communication system for relaying real-time display data to an external display device for rendering a graphical user interface on the external device. By not incorporating power-hungry display technology, speakers, other communication components, such as cellular, or other battery-draining components, the portable computing device avoids the need for bulky batteries and maintains a suitable charge over a reasonable period of time. In addition, the easy portability of the device means that it can turn any external display device into its own user input/output device such that users need not mirror their applications and data to multiple devices.