Space is the boundless three-dimensional extent in which objects and events have relative position and direction. Physical space is often conceived in three linear dimensions, although modern physicists usually consider it, with time, to be part of a boundless four-dimensional continuum known as spacetime.
A smartwatch is a computerized wristwatch with functionality that goes beyond timekeeping. While early models can perform basic tasks, such as calculations, translations, and game-playing, 2010s smartwatches are effectively wearable computers.
A laptop, often called a notebook or “notebook computer”, is a small, portable personal computer with a form factor, an alphanumeric keyboard on the lower part of the “clamshell” and a thin LCD or LED computer screen.